Organic light-emitting device

ABSTRACT

An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer that is disposed between the first electrode and the second electrode and includes an emission layer, wherein the organic layer includes at least one pyrene-based compound represented by Formula 1 and at least one anthracene-based compound represented by Formula 2:

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to and the benefit of Korean PatentApplication No. 10-2014-0059291, filed on May 16, 2014, in the KoreanIntellectual Property Office, the disclosure of which is incorporatedherein in its entirety by reference.

BACKGROUND

1. Field

One or more embodiments of the present invention relate to an organiclight-emitting device.

2. Description of the Related Art

Organic light-emitting devices are self-emission devices that have wideviewing angles, high contrast ratios, short response time, and excellentbrightness, driving voltage, and response speed characteristics, andproduce full-color images.

The organic light-emitting device may include a first electrode on asubstrate, and a hole transport region, an emission layer, an electrontransport region, and a second electrode, which are sequentiallydisposed on the first electrode. Holes provided from the first electrodemay move toward the emission layer through the hole transport region,and electrons provided from the second electrode may move toward theemission layer through the electron transport region. Carriers, such asholes and electrodes, are recombined in the emission layer to produceexcitons. These excitons change from an excited state to a ground state,thereby generating light.

SUMMARY

Aspects according one or more embodiments of the present invention aredirected toward an organic light-emitting device.

Additional aspects will be set forth in part in the description whichfollows and, in part, will be apparent from the description, or may belearned by practice of the presented embodiments.

According to an embodiment of the present invention, an organiclight-emitting device includes a first electrode; a second electrodefacing the first electrode; and an organic layer between the firstelectrode and the second electrode and including an emission layer,wherein the organic layer includes at least one pyrene-based compoundrepresented by Formula 1 and at least one anthracene-based compoundrepresented by Formula 2:

wherein in Formulae 1 and 2,

L₁ may be selected from a substituted or unsubstituted C₆-C₆₀ arylenegroup and a substituted or unsubstituted C₁-C₆₀ heteroarylene group;

L₂ may be selected from a substituted or unsubstituted C₇-C₆₀ arylenegroup and a substituted or unsubstituted C₁-C₆₀ heteroarylene group;

a1 and a2 may be each independently selected from 1, 2, 3, and 4;

R₁₁ to R₁₆ may be each independently selected from a substituted orunsubstituted C₁-C₆₀ alkyl group, a substituted or unsubstituted C₃-C₁₀cycloalkyl group, a substituted or unsubstituted C₆-C₆₀ aryl group, asubstituted or unsubstituted C₁-C₆₀ heteroaryl group, a substituted orunsubstituted monovalent non-aromatic condensed polycyclic group, and asubstituted or unsubstituted monovalent non-aromatic hetero-condensedpolycyclic group;

n1 may be selected from 0 and 1;

R₂₁ may be selected from a substituted or unsubstituted C₆-C₆₀ arylgroup, a substituted or unsubstituted C₁-C₆₀ heteroaryl group, asubstituted or unsubstituted monovalent non-aromatic condensedpolycyclic group, and a substituted or unsubstituted monovalentnon-aromatic hetero-condensed polycyclic group;

R₁₇ to R₂₀, R₂₂, and R₂₃ may be each independently selected from ahydrogen, a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyanogroup, a nitro group, an amino group, an amidino group, a hydrazinegroup, a hydrazone group, a carboxylic acid group or a salt thereof, asulfonic acid group or a salt thereof, a phosphoric acid group or a saltthereof, a substituted or unsubstituted C₁-C₆₀ alkyl group, asubstituted or unsubstituted C₁-C₆₀ alkoxy group, a substituted orunsubstituted C₃-C₁₀ cycloalkyl group, a substituted or unsubstitutedC₆-C₆₀ aryl group, a substituted or unsubstituted C₆-C₆₀ aryloxy group,a substituted or unsubstituted C₁-C₆₀ heteroaryl group, and—Si(Q₁)(Q₂)(Q₃),

b17, b18, and b20 may be each independently selected from 1 and 2;

b19 and b21 may be each independently selected from 1, 2, and 3;

b22 may be selected from 1, 2, 3, 4, and 5;

b23 may be selected from 1, 2, 3, 4, 5, 6, 7, and 8;

at least one substituent of the substituted C₆-C₆₀ arylene group, thesubstituted C₁-C₆₀ heteroarylene group, the substituted C₇-C₆₀ arylenegroup, the substituted C₁-C₆₀ alkyl group, the substituted C₁-C₆₀ alkoxygroup, the substituted C₃-C₁₀ cycloalkyl group, the substituted C₆-C₆₀aryl group, the substituted C₆-C₆₀ aryloxy group, the substituted C₁-C₆₀heteroaryl group, the substituted monovalent non-aromatic condensedpolycyclic group, and the substituted monovalent non-aromatichetero-condensed polycyclic group may be selected from:

a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxylic acid group or a salt thereof, a sulfonic acid groupor a salt thereof, a phosphoric acid group or a salt thereof, a C₁-C₆₀alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group, and aC₁-C₆₀ alkoxy group;

a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group,and a C₁-C₆₀ alkoxy group, each substituted with at least one selectedfrom a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, anitro group, an amino group, an amidino group, a hydrazine group, ahydrazone group, a carboxylic acid group or a salt thereof, a sulfonicacid group or a salt thereof, a phosphoric acid group or a salt thereof,a C₃-C₁₀ cycloalkyl group, a C₂-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₂-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,a monovalent non-aromatic hetero-condensed polycyclic group, and—Si(Q₁₁)(Q₁₂)(Q₁₃);

a C₃-C₁₀ cycloalkyl group, a C₂-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₂-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic hetero-condensed polycyclic group;

a C₃-C₁₀ cycloalkyl group, a C₂-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₂-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic hetero-condensed polycyclic group, eachsubstituted with at least one selected from a deuterium, —F, —Cl, —Br,—I, a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀alkenyl group, a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀cycloalkyl group, a C₂-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenylgroup, a C₂-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, amonovalent non-aromatic condensed polycyclic group, a monovalentnon-aromatic hetero-condensed polycyclic group, and —Si(Q₂₁)(Q₂₂)(Q₂₃);and

—Si(Q₃₁)(Q₃₂)(Q₃₃); and

Q₁ to Q₃, Q₁₁ to Q₁₃, Q₂₁ to Q₂₃, and Q₃₁ to Q₃₃ may be eachindependently selected from a C₁-C₆₀ alkyl group, a C₆-C₆₀ aryl group, aC₁-C₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclicgroup, and a monovalent non-aromatic hetero-condensed polycyclic group.

BRIEF DESCRIPTION OF THE DRAWING

These and/or other aspects will become apparent and more readilyappreciated from the following description of the embodiments, taken inconjunction with the accompanying drawing in which:

The drawing is a schematic diagram illustrating an organiclight-emitting device according to an embodiment.

DETAILED DESCRIPTION

Reference will now be made in more detail to embodiments, examples ofwhich are illustrated in the accompanying drawing, wherein likereference numerals refer to like elements throughout. In this regard,the present embodiments may have different forms and should not beconstrued as being limited to the descriptions set forth herein.Accordingly, the embodiments are merely described below, by referring tothe drawing, to explain aspects of the present description. As usedherein, the term “and/or” includes any and all combinations of one ormore of the associated listed items. Expressions such as “at least oneof,” when preceding a list of elements, modify the entire list ofelements and do not modify the individual elements of the list. Further,the use of “may” when describing embodiments of the present inventionrefers to “one or more embodiments of the present invention.”

As the invention allows for various changes and numerous embodiments,particular embodiments will be illustrated in the drawing and describedin more detail in the written description. The attached drawing forillustrating example embodiments of the present invention are referredto in order to gain a sufficient understanding of the present invention,the merits thereof, and the objectives accomplished by theimplementation of the present invention.

Hereinafter, the present invention will be described in more detail byexplaining example embodiments of the invention with reference to theattached drawing. Like reference numerals in the drawing denote likeelements.

As used herein, the singular forms “a,” “an” and “the” are intended toinclude the plural forms as well, unless the context clearly indicatesotherwise.

It will be further understood that the terms “comprises” and/or“comprising” used herein specify the presence of the stated features orcomponents, but do not preclude the presence or addition of one or moreother features or components.

It will be understood that when a layer, region, or component isreferred to as being “formed on” another layer, region, or component, itcan be directly or indirectly formed on the other layer, region, orcomponent. That is, for example, intervening layers, regions, orcomponents may be present.

Sizes of components in the drawing may be exaggerated for convenience ofexplanation. In other words, since sizes and thicknesses of componentsin the drawing are arbitrarily illustrated for convenience ofexplanation, the following embodiments are not limited thereto.

An organic light-emitting device according to an embodiment may include:a first electrode; a second electrode facing the first electrode; and anorganic layer that is disposed between the first electrode and thesecond electrode and includes an emission layer, wherein the organiclayer includes at least one pyrene-based compound represented by Formula1 and at least one anthracene-based compound represented by Formula 2:

wherein in Formula 1, L₁ may be selected from a substituted orunsubstituted C₆-C₆₀ arylene group and a substituted or unsubstitutedC₁-C₆₀ heteroarylene group;

at least one substituent of the substituted C₆-C₆₀ arylene group andsubstituted C₁-C₆₀ heteroarylene group may be selected from:

a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxylic acid group or a salt thereof, a sulfonic acid groupor a salt thereof, a phosphoric acid group or a salt thereof, a C₁-C₆₀alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group, and aC₁-C₆₀ alkoxy group;

a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group,and a C₁-C₆₀ alkoxy group, each substituted with at least one selectedfrom a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, anitro group, an amino group, an amidino group, a hydrazine group, ahydrazone group, a carboxylic acid group or a salt thereof, a sulfonicacid group or a salt thereof, a phosphoric acid group or a salt thereof,a C₃-C₁₀ cycloalkyl group, a C₂-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₂-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,a monovalent non-aromatic hetero-condensed polycyclic group, and—Si(Q₁₁)(Q₁₂)(Q₁₃);

a C₃-C₁₀ cycloalkyl group, a C₂-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₂-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic hetero-condensed polycyclic group;

a C₃-C₁₀ cycloalkyl group, a C₂-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₂-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic hetero-condensed polycyclic group, eachsubstituted with at least one selected from a deuterium, —F, —Cl; —Br,—I, a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀alkenyl group, a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀cycloalkyl group, a C₂-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenylgroup, a C₂-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, amonovalent non-aromatic condensed polycyclic group, a monovalentnon-aromatic hetero-condensed polycyclic group, and —Si(Q₂₁)(Q₂₂)(Q₂₃);and

—Si(Q₃₁)(Q₃₂)(Q₃₃); and

Q₁ to Q₃, Q₁₁ to Q₁₃, Q₂₁ to Q₂₃, and Q₃₁ to Q₃₃ may be eachindependently selected from a C₁-C₆₀ alkyl group, a C₆-C₆₀ aryl group, aC₁-C₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclicgroup, and a monovalent non-aromatic hetero-condensed polycyclic group.

For example, in Formula 1, L₁ may be selected from:

a phenylene group, a naphthylene group, a phenanthrenylene group, ananthracenylene group, a triphenylenylene group, a pyrenylene group, achrysenylene group, a pyrrolylene group, a thiophenylene group, afuranylene group, an imidazolylene group, a pyrazolylene group, apyridinylene group, a pyrazinylene group, a pyrimidinylene group, apyridazinylene group, an indolylene group, a quinolinylene group, anisoquinolinylene group, a benzoquinolinylene group, and aphenanthridinylene group; and

a phenylene group, a naphthylene group, a phenanthrenylene group, ananthracenylene group, a pyrenylene group, a pyrenylene group, achrysenylene group, a pyrrolylene group, a thiophenylene group, afuranylene group, an imidazolylene group, a pyrazolylene group, apyridinylene group, a pyrazinylene group, a pyrimidinylene group, apyridazinylene group, an indolylene group, a quinolinylene group, anisoquinolinylene group, a benzoquinolinylene group, and aphenanthridinylene group, each substituted with at least one selectedfrom a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, anitro group, an amino group, an amidino group, a hydrazine group, ahydrazone group, a carboxylic acid group or a salt thereof, a sulfonicacid group or a salt thereof, a phosphoric acid group or a salt thereof,a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxy group, a cyclopentyl group, acyclohexyl group, a cycloheptyl group, a cyclopentenyl group, acyclohexenyl group, a phenyl group, a pentalenyl group, an indenylgroup, a naphthyl group, an azulenyl group, a heptalenyl group, anindacenyl group, an acenaphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenalenyl group, a phenanthrenyl group, an anthracenyl group, afluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenylgroup, a naphthacenyl group, a picenyl group, a perylenyl group, apentaphenyl group, a hexacenyl group, a pentacenyl group, a rubicenylgroup, a coronenyl group, an ovalenyl group, a pyrrolyl group, athiophenyl group, a furanyl group, an imidazolyl group, a pyrazolylgroup, a thiazolyl group, an isothiazolyl group, an oxazolyl group, anisooxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, an isoindolyl group, an indolyl group, anindazolyl group, a furinyl group, a quinolinyl group, an isoquinolinylgroup, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinylgroup, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, acarbazolyl group, a phenanthridinyl group, an acridinyl group, aphenanthrolinyl group, a phenazinyl group, a benzoimidazolyl group, abenzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group,a benzooxazolyl group, an isobenzooxazolyl group, a triazolyl group, atetrazolyl group, an oxadiazolyl group, a triazinyl group, adibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolylgroup, a dibenzocarbazolyl group, a thiadiazolyl group, and animidazopyridinyl group, but is not limited thereto.

In another embodiment, in Formula 1, L₁ may be a group represented byone of Formulae 3-1 to 3-22, but is not limited thereto:

In Formulae 3-1 to 3-22,

Z₁ to Z₃ may be each independently selected from a hydrogen, adeuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxylic acid group or a salt thereof, a sulfonic acid groupor a salt thereof, a phosphoric acid group or a salt thereof, a C₁-C₂₀alkyl group, a C₁-C₂₀ alkoxy group, a phenyl group, a naphthyl group, afluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, apyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group,a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, anisoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, acarbazolyl group, a triazinyl group, a dibenzofuranyl group, adibenzothiophenyl group, a benzocarbazolyl group, and adibenzocarbazolyl group;

d1 may be selected from 1, 2, 3, and 4;

d2 may be selected from 1, 2, 3, 4, 5, and 6;

d3 may be selected from 1, 2, 3, 4, and 5;

d4 may be selected from 1, 2, and 3;

d5 may be selected from 1 and 2; and

* and *′ each indicate a binding site to a neighboring atom.

In another embodiment, in Formula 1, L₁ may be a group represented byone of Formulae 4-1 to 4-22, but is not limited thereto:

In Formulae 4-1 to 4-22,

* and *′ each indicate a binding site to a neighboring atom.

In Formula 2, L₂ may be selected from a substituted or unsubstitutedC₇-C₆₀ arylene group and a substituted or unsubstituted C₁-C₆₀heteroarylene group;

at least one substituent of the substituted C₇-C₆₀ arylene group andsubstituted C₁-C₆₀ heteroarylene group may be selected from:

a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxylic acid group or a salt thereof, a sulfonic acid groupor a salt thereof, a phosphoric acid group or a salt thereof, a C₁-C₆₀alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group, and aC₁-C₆₀ alkoxy group;

a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group,and a C₁-C₆₀ alkoxy group, each substituted with at least one selectedfrom a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, anitro group, an amino group, an amidino group, a hydrazine group, ahydrazone group, a carboxylic acid group or a salt thereof, a sulfonicacid group or a salt thereof, a phosphoric acid group or a salt thereof,a C₃-C₁₀ cycloalkyl group, a C₂-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₂-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,a monovalent non-aromatic hetero-condensed polycyclic group, and—Si(Q₁₁)(Q₁₂)(Q₁₃);

a C₃-C₁₀ cycloalkyl group, a C₂-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₂-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic hetero-condensed polycyclic group;

a C₃-C₁₀ cycloalkyl group, a C₂-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₂-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic hetero-condensed polycyclic group, eachsubstituted with at least one selected from a deuterium, —F, —Cl, —Br,—I, a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀alkenyl group, a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀cycloalkyl group, a C₂-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenylgroup, a C₂-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, amonovalent non-aromatic condensed polycyclic group, a monovalentnon-aromatic hetero-condensed polycyclic group, and —Si(Q₂₁)(Q₂₂)(Q₂₃);and

—Si(Q₃₁)(Q₃₂)(Q₃₃); and

Q₁ to Q₃, Q₁₁ to Q₁₃, Q₂₁ to Q₂₃, and Q₃₁ to Q₃₃ may be eachindependently selected from a C₁-C₆₀ alkyl group, a C₆-C₆₀ aryl group, aC₁-C₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclicgroup, and a monovalent non-aromatic hetero-condensed polycyclic group.

For example, in Formula 2, L₂ may be selected from a naphthylene group,a phenanthrenylene group, an anthracenylene group, a triphenylenylenegroup, a pyrenylene group, a chrysenylene group, a pyrrolylene group, athiophenylene group, a furanylene group, an imidazolylene group, apyrazolylene group, a pyridinylene group, a pyrazinylene group, apyrimidinylene group, a pyridazinylene group, an indolylene group, aquinolinylene group, an isoquinolinylene group, a benzoquinolinylenegroup, and a phenanthridinylene group; and

a naphthylene group, a phenanthrenylene group, an anthracenylene group,a pyrenylene group, a pyrenylene group, a chrysenylene group, apyrrolylene group, a thiophenylene group, a furanylene group, animidazolylene group, a pyrazolylene group, a pyridinylene group, apyrazinylene group, a pyrimidinylene group, a pyridazinylene group, anindolylene group, a quinolinylene group, an isoquinolinylene group, abenzoquinolinylene group, and a phenanthridinylene group, eachsubstituted with at least one selected from a deuterium, —F, —Cl, —Br,—I, a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀alkoxy group, a cyclopentyl group, a cyclohexyl group, a cycloheptylgroup, a cyclopentenyl group, a cyclohexenyl group, a phenyl group, apentalenyl group, an indenyl group, a naphthyl group, an azulenyl group,a heptalenyl group, an indacenyl group, an acenaphthyl group, afluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, ananthracenyl group, a fluoranthenyl group, a triphenylenyl group, apyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group,a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenylgroup, a rubicenyl group, a coronenyl group, an ovalenyl group, apyrrolyl group, a thiophenyl group, a furanyl group, an imidazolylgroup, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, anoxazolyl group, an isooxazolyl group, a pyridinyl group, a pyrazinylgroup, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, anindolyl group, an indazolyl group, a furinyl group, a quinolinyl group,an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, anaphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, acinnolinyl group, a carbazolyl group, a phenanthridinyl group, anacridinyl group, a phenanthrolinyl group, a phenazinyl group, abenzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, anisobenzothiazolyl group, a benzooxazolyl group, an isobenzooxazolylgroup, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, atriazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, abenzocarbazolyl group, a dibenzocarbazolyl group, a thiadiazolyl group,and an imidazopyridinyl group.

In another embodiment, in Formula 2, L₂ may be a group represented byone of Formulae 3-2 to 3-22, but is not limited thereto:

In Formulae 3-2 to 3-22,

Z₁ to Z₃ may be each independently selected from a hydrogen, adeuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxylic acid group or a salt thereof, a sulfonic acid groupor a salt thereof, a phosphoric acid group or a salt thereof, a C₁-C₂₀alkyl group, a C₁-C₂₀ alkoxy group, a phenyl group, a naphthyl group, afluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, apyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group,a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, anisoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, acarbazolyl group, a triazinyl group, a dibenzofuranyl group, adibenzothiophenyl group, a benzocarbazolyl group, and adibenzocarbazolyl group,

d1 may be selected from 1, 2, 3 and 4;

d2 may be selected from 1, 2, 3, 4, 5 and 6;

d3 may be selected from 1, 2, 3, 4 and 5;

d4 may be selected from 1, 2 and 3;

d5 may be selected from 1 and 2; and

* and *′ each indicate a binding site to a neighboring atom.

In another embodiment, in Formula 2, L₂ may be a group represented byone of Formulae 4-2 to 4-22, but is not limited thereto:

In Formulae 4-1 to 4-22,

* and *′ each indicate a binding site to a neighboring atom.

In Formula 1, a1 represents the number of L₁ and may be selected from 1,2, 3, and 4. For example, in Formula 1, a1 may be selected from 1 and 2,but is not limited thereto. When a1 is 2 or greater, a plurality of L₁smay be identical to or different from each other.

In Formula 2, a2 represents the number of L₂, and may be selected from1, 2, 3, and 4. For example, in Formula 2, a2 may be selected from 1 and2, but is not limited thereto. When a2 is 2 or greater, a plurality ofL_(e)s may be identical to or different from each other.

In Formula 1, R₁₁ to R₁₆ may be each independently selected from asubstituted or unsubstituted C₁-C₆₀ alkyl group, a substituted orunsubstituted C₃-C₁₀ cycloalkyl group, a substituted or unsubstitutedC₆-C₆₀ aryl group, a substituted or unsubstituted C₁-C₆₀ heteroarylgroup, a substituted or unsubstituted monovalent non-aromatic condensedpolycyclic group, and a substituted or unsubstituted monovalentnon-aromatic hetero-condensed polycyclic group; and

at least one substituent of the substituted C₁-C₆₀ alkyl group, thesubstituted C₃-C₁₀ cycloalkyl group, the substituted C₆-C₆₀ aryl group,the substituted C₁-C₆₀ heteroaryl group, the substituted monovalentnon-aromatic condensed polycyclic group, and the substituted monovalentnon-aromatic hetero-condensed polycyclic group may be selected from:

a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxylic acid group or a salt thereof, a sulfonic acid groupor a salt thereof, a phosphoric acid group or a salt thereof, a C₁-C₆₀alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group, and aC₁-C₆₀ alkoxy group;

a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group,and a C₁-C₆₀ alkoxy group, each substituted with at least one selectedfrom a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, anitro group, an amino group, an amidino group, a hydrazine group, ahydrazone group, a carboxylic acid group or a salt thereof, a sulfonicacid group or a salt thereof, a phosphoric acid group or a salt thereof,a C₃-C₁₀ cycloalkyl group, a C₂-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₂-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,a monovalent non-aromatic hetero-condensed polycyclic group, and—Si(Q₁₁)(Q₁₂)(Q₁₃);

a C₃-C₁₀ cycloalkyl group, a C₂-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₂-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic hetero-condensed polycyclic group;

a C₃-C₁₀ cycloalkyl group, a C₂-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₂-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic hetero-condensed polycyclic group, eachsubstituted with at least one selected from a deuterium, —F, —Cl, —Br,—I, a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀alkenyl group, a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀cycloalkyl group, a C₂-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenylgroup, a C₂-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, amonovalent non-aromatic condensed polycyclic group, a monovalentnon-aromatic hetero-condensed polycyclic group, and —Si(Q₂₁)(Q₂₂)(Q₂₃);and

—Si(Q₃₁)(Q₃₂)(Q₃₃); and

Q₁ to Q₃, Q₁₁ to Q₁₃, Q₂₁ to Q₂₃, and Q₃₁ to Q₃₃ may be eachindependently selected from a C₁-C₆₀ alkyl group, a C₆-C₆₀ aryl group, aC₁-C₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclicgroup, and a monovalent non-aromatic hetero-condensed polycyclic group.

In Formula 1, R₁₁ and R₁₂ may link to each other to form a substitutedor unsubstituted saturated ring or a substituted or unsubstitutedunsaturated ring.

In Formula 1, R₁₃ and R₁₄ may link to each other to form a substitutedor unsubstituted saturated ring or a substituted or unsubstitutedunsaturated ring.

In Formula 1, R₁₅ and R₁₆ may link to each other to form a substitutedor unsubstituted saturated ring or a substituted or unsubstitutedunsaturated ring.

For example, in Formula 1, R₁₁ to R₁₆ may be each independently selectedfrom a methyl group, an ethyl group, an n-propyl group, an iso-propylgroup, an n-butyl group, a sec-butyl group, an iso-butyl group, atert-butyl group, an n-pentyl group, an n-hexyl group, an n-heptylgroup, an n-octyl group, a cyclopentyl group, a cyclohexyl group, anadamantyl group, a norbornyl group, a phenyl group, a pentalenyl group,an indenyl group, a naphthyl group, an azulenyl group, a heptalenylgroup, an indacenyl group, an acenaphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenalenyl group, a phenanthrenyl group, an anthracenyl group, afluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenylgroup, a naphthacenyl group, a picenyl group, a perylenyl group, apentaphenyl group, a hexacenyl group, a pentacenyl group, a rubicenylgroup, a coronenyl group, an ovalenyl group, a pyrrolyl group, athiophenyl group, a furanyl group, an imidazolyl group, a pyrazolylgroup, a thiazolyl group, an isothiazolyl group, an oxazolyl group, anisooxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, an isoindolyl group, an indolyl group, anindazolyl group, a purinyl group, a quinolinyl group, an isoquinolinylgroup, a carbazolyl group, a benzoquinolinyl group, a phthalazinylgroup, a naphthyridinyl group, a quinoxalinyl group, a quinazolinylgroup, a cinnolinyl group, a phenanthridinyl group, an acridinyl group,a phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, abenzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group,a benzooxazolyl group, an isobenzooxazolyl group, a triazolyl group, atetrazolyl group, an oxadiazolyl group, a triazinyl group, adibenzofuranyl group, a dibenzothiophenyl group, a dibenzosilolyl group,a benzocarbazolyl group, and a dibenzocarbazolyl group; and

a methyl group, an ethyl group, an n-propyl group, an iso-propyl group,an n-butyl group, a sec-butyl group, an iso-butyl group, a tert-butylgroup, an n-pentyl group, an n-hexyl group, an n-heptyl group, ann-octyl group, a cyclopentyl group, a cyclohexyl group, an adamantylgroup, a norbornyl group, a phenyl group, a pentalenyl group, an indenylgroup, a naphthyl group, an azulenyl group, a heptalenyl group, anindacenyl group, an acenaphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenalenyl group, a phenanthrenyl group, an anthracenyl group, afluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenylgroup, a naphthacenyl group, a picenyl group, a perylenyl group, apentaphenyl group, a hexacenyl group, a pentacenyl group, a rubicenylgroup, a coronenyl group, an ovalenyl group, a pyrrolyl group, athiophenyl group, a furanyl group, an imidazolyl group, a pyrazolylgroup, a thiazolyl group, an isothiazolyl group, an oxazolyl group, anisooxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, an isoindolyl group, an indolyl group, anindazolyl group, a furinyl group, a quinolinyl group, an isoquinolinylgroup, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinylgroup, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, aphenanthridinyl group, an acridinyl group, a phenanthrolinyl group, aphenazinyl group, a benzoimidazolyl group, a benzofuranyl group, abenzothiophenyl group, an isobenzothiazolyl group, a benzooxazolylgroup, an isobenzooxazolyl group, a triazolyl group, a tetrazolyl group,an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, adibenzophenyl group, a dibenzosilolyl group, a benzocarbazolyl group,and a dibenzocarbazolyl group, each substituted with at least oneselected from a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyanogroup, a nitro group, an amino group, an amidino group, a hydrazinegroup, a hydrazone group, a carboxylic acid group or a salt thereof, asulfonic acid group or a salt thereof, a phosphoric acid group or a saltthereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxy group,—Si(Q₃₁)(Q₃₂)(Q₃₃), and a —F substituted C₁-C₂₀ alkyl group, a phenylgroup, a pentalenyl group, an indenyl group, a naphthyl group, anazulenyl group, a heptalenyl group, an indacenyl group, an acenaphthylgroup, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenylgroup, a dibenzofluorenyl group, a phenalenyl group, a phenanthrenylgroup, an anthracenyl group, a fluoranthenyl group, a triphenylenylgroup, a pyrenyl group, a chrysenyl group, a naphthacenyl group, apicenyl group, a perylenyl group, a pentaphenyl group, a hexacenylgroup, a pentacenyl group, a rubicenyl group, a coronenyl group, anovalenyl group, a pyrrolyl group, a thiophenyl group, a furanyl group,an imidazolyl group, a pyrazolyl group, a thiazolyl group, anisothiazolyl group, an oxazolyl group, an isooxazolyl group, a pyridinylgroup, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, anisoindolyl group, an indolyl group, an indazolyl group, a furinyl group,a quinolinyl group, an isoquinolinyl group, a carbazolyl group, abenzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, aquinoxalinyl group, a quinazolinyl group, a cinnolinyl group, acarbazolyl group, a phenanthridinyl group, an acridinyl group, aphenanthrolinyl group, a phenazinyl group, a benzoimidazolyl group, abenzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group,a benzooxazolyl group, an isobenzooxazolyl group, a triazolyl group, atetrazolyl group, an oxadiazolyl group, a triazinyl group, adibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolylgroup, and a dibenzocarbazolyl group; and

Q₃₁ to Q₃₃ may be each independently selected from a C₁-C₂₀ alkyl group,a phenyl group, a naphthyl group, and a pyridinyl group, but are notlimited thereto.

In another embodiment, in Formula 1, R₁₁ to R₁₆ may be eachindependently selected from a methyl group, an iso-propyl group, acyclohexyl group, a phenyl group, a naphthyl group, a phenanthrenylgroup, a fluorenyl group, a carbazolyl group, a dibenzofuranyl group,and a dibenzophenyl group; and

a methyl group, an iso-propyl group, a cyclohexyl group, a phenyl group,a naphthyl group, a phenanthrenyl group, a fluorenyl group, a carbazolylgroup, a dibenzofuranyl group, and a dibenzophenyl group, eachsubstituted with at least one selected from a deuterium, —F, —Cl, —Br,—I, a cyano group, a methyl group, an iso-propyl group, —Si(CH₃)₃, —CF₃,a phenyl group, and a naphthyl group, but are not limited thereto.

In another embodiment, in Formula 1, R₁₁ to R₁₆ may be eachindependently selected from a methyl group, an iso-propyl group, acyclohexyl group, and a group represented by one of Formulae 5-1 to5-21, but are not limited thereto:

In Formulae 5-1 to 5-21,

* indicates a binding site to a neighboring atom.

In Formula 1, n1 represents the number of a moiety represented by

(here, * indicates a binding site to a neighboring atom), and may beselected from 0 and 1.

In Formula 2, R₂₁ may be selected from a substituted or unsubstitutedC₆-C₆₀ aryl group, a substituted or unsubstituted C₁-C₆₀ heteroarylgroup, a substituted or unsubstituted monovalent non-aromatic condensedpolycyclic group, and a substituted or unsubstituted monovalentnon-aromatic hetero-condensed polycyclic group;

at least one substituent of the substituted C₆-C₆₀ aryl group, thesubstituted C₁-C₆₀ heteroaryl group, the substituted monovalentnon-aromatic condensed polycyclic group, and the substituted monovalentnon-aromatic hetero-condensed polycyclic group may be selected from:

a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxylic acid group or a salt thereof, a sulfonic acid groupor a salt thereof, a phosphoric acid group or a salt thereof, a C₁-C₆₀alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group, and aC₁-C₆₀ alkoxy group;

a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group,and a C₁-C₆₀ alkoxy group, each substituted with at least one selectedfrom a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, anitro group, an amino group, an amidino group, a hydrazine group, ahydrazone group, a carboxylic acid group or a salt thereof, a sulfonicacid group or a salt thereof, a phosphoric acid group or a salt thereof,a C₃-C₁₀ cycloalkyl group, a C₂-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₂-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,a monovalent non-aromatic hetero-condensed polycyclic group, and—Si(Q₁₁)(Q₁₂)(Q₁₃);

a C₃-C₁₀ cycloalkyl group, a C₂-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₂-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic hetero-condensed polycyclic group;

a C₃-C₁₀ cycloalkyl group, a C₂-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₂-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic hetero-condensed polycyclic group, eachsubstituted with at least one selected from a deuterium, —F, —Cl, —Br,—I, a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀alkenyl group, a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀cycloalkyl group, a C₂-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenylgroup, a C₂-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, amonovalent non-aromatic condensed polycyclic group, a monovalentnon-aromatic hetero-condensed polycyclic group, and —Si(Q₂₁)(Q₂₂)(Q₂₃);and

—Si(Q₃₁)(Q₃₂)(Q₃₃); and

Q₁ to Q₃, Q₁₁ to Q₁₃, Q₂₁ to Q₂₃, and Q₃₁ to Q₃₃ may be eachindependently selected from a C₁-C₆₀ alkyl group, a C₆-C₆₀ aryl group, aC₁-C₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclicgroup, and a monovalent non-aromatic hetero-condensed polycyclic group.

For example, in Formula 2, R₂₁ may be selected from a phenyl group, apentalenyl group, an indenyl group, a naphthyl group, an azulenyl group,a heptalenyl group, an indacenyl group, an acenaphthyl group, afluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, ananthracenyl group, a fluoranthenyl group, a triphenylenyl group, apyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group,a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenylgroup, a rubicenyl group, a coronenyl group, an ovalenyl group, apyrrolyl group, a thiophenyl group, a furanyl group, an imidazolylgroup, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, anoxazolyl group, an isooxazolyl group, a pyridinyl group, a pyrazinylgroup, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, anindolyl group, an indazolyl group, a furinyl group, a quinolinyl group,an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, anaphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, acinnolinyl group, a phenanthridinyl group, an acridinyl group, aphenanthrolinyl group, a phenazinyl group, a benzoimidazolyl group, abenzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group,a benzooxazolyl group, an isobenzooxazolyl group, a triazolyl group, atetrazolyl group, an oxadiazolyl group, a triazinyl group, adibenzofuranyl group, a dibenzophenyl group, a dibenzosilolyl group, abenzocarbazolyl group, and a dibenzocarbazolyl group; and

a phenyl group, a pentalenyl group, an indenyl group, a naphthyl group,an azulenyl group, a heptalenyl group, an indacenyl group, anacenaphthyl group, a fluorenyl group, a spiro-fluorenyl group, abenzofluorenyl group, a dibenzofluorenyl group, a phenalenyl group, aphenanthrenyl group, an anthracenyl group, a fluoranthenyl group, atriphenylenyl group, a pyrenyl group, a chrysenyl group, a naphthacenylgroup, a picenyl group, a perylenyl group, a pentaphenyl group, ahexacenyl group, a pentacenyl group, a rubicenyl group, a coronenylgroup, an ovalenyl group, a pyrrolyl group, a thiophenyl group, afuranyl group, an imidazolyl group, a pyrazolyl group, a thiazolylgroup, an isothiazolyl group, an oxazolyl group, an isooxazolyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, an isoindolyl group, an indolyl group, an indazolyl group, afurinyl group, a quinolinyl group, an isoquinolinyl group, abenzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, aquinoxalinyl group, a quinazolinyl group, a cinnolinyl group, aphenanthridinyl group, an acridinyl group, a phenanthrolinyl group, aphenazinyl group, a benzoimidazolyl group, a benzofuranyl group, abenzothiophenyl group, an isobenzothiazolyl group, a benzooxazolylgroup, an isobenzooxazolyl group, a triazolyl group, a tetrazolyl group,an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, adibenzophenyl group, a dibenzosilolyl group, a benzocarbazolyl group,and a dibenzocarbazolyl group, each substituted with at least oneselected from a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyanogroup, a nitro group, an amino group, an amidino group, a hydrazinegroup, a hydrazone group, a carboxylic acid group or a salt thereof, asulfonic acid group or a salt thereof, a phosphoric acid group or a saltthereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxy group,—Si(Q₃₁)(Q₃₂)(Q₃₃), a —F substituted C₁-C₂₀ alkyl group, a phenyl group,a pentalenyl group, an indenyl group, a naphthyl group, an azulenylgroup, a heptalenyl group, an indacenyl group, an acenaphthyl group, afluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, ananthracenyl group, a fluoranthenyl group, a triphenylenyl group, apyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group,a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenylgroup, a rubicenyl group, a coronenyl group, an ovalenyl group, apyrrolyl group, a thiophenyl group, a furanyl group, an imidazolylgroup, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, anoxazolyl group, an isooxazolyl group, a pyridinyl group, a pyrazinylgroup, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, anindolyl group, an indazolyl group, a furinyl group, a quinolinyl group,an isoquinolinyl group, a carbazolyl group, a benzoquinolinyl group, aphthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, aquinazolinyl group, a cinnolinyl group, a carbazolyl group, aphenanthridinyl group, an acridinyl group, a phenanthrolinyl group, aphenazinyl group, a benzoimidazolyl group, a benzofuranyl group, abenzothiophenyl group, an isobenzothiazolyl group, a benzooxazolylgroup, an isobenzooxazolyl group, a triazolyl group, a tetrazolyl group,an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, adibenzothiophenyl group, a benzocarbazolyl group, and adibenzocarbazolyl group; and

Q₃₁ to Q₃₃ may be each independently selected from a C₁-C₂₀ alkyl group,a phenyl group, a naphthyl group, and a pyridinyl group, but are notlimited thereto.

In another embodiment, in Formula 2, R₂₁ may be selected from a phenylgroup, a naphthyl group, a phenanthrenyl group, a fluorenyl group, acarbazolyl group, a dibenzofuranyl group, and a dibenzophenyl group; and

a methyl group, an iso-propyl group, a cyclohexyl group, a phenyl group,a naphthyl group, a phenanthrenyl group, a fluorenyl group, a carbazolylgroup, a dibenzofuranyl group, and a dibenzophenyl group, eachsubstituted with at least one selected from a deuterium, —F, —Cl, —Br,—I, a cyano group, a methyl group, an iso-propyl group, —Si(CH₃)₃, —CF₃,a phenyl group, and a naphthyl group, but is not limited thereto.

In another embodiment, in Formula 2, R₂₁ may be a group represented byone of Formulae 5-1 to 5-21, but is not limited thereto:

In Formulae 5-1 to 5-21,

* indicates a binding site to a neighboring atom.

In Formulae 1 and 2, R₁₇ to R₂₀, R₂₂, and R₂₃ may be each independentlyselected from a hydrogen, a deuterium, —F, —Cl, —Br, —I, a hydroxylgroup, a cyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxylic acid group or a saltthereof, a sulfonic acid group or a salt thereof, a phosphoric acidgroup or a salt thereof, a substituted or unsubstituted C₁-C₆₀ alkylgroup, a substituted or unsubstituted C₁-C₆₀ alkoxy group, a substitutedor unsubstituted C₃-C₁₀ cycloalkyl group, a substituted or unsubstitutedC₆-C₆₀ aryl group, a substituted or unsubstituted C₆-C₆₀ aryloxy group,a substituted or unsubstituted C₁-C₆₀ heteroaryl group, and—Si(Q₁)(Q₂)(Q₃);

at least one substituent of the substituted C₁-C₆₀ alkyl group, thesubstituted C₁-C₆₀ alkoxy group, the substituted C₃-C₁₀ cycloalkylgroup, the substituted C₆-C₆₀ aryl group, the substituted C₆-C₆₀ aryloxygroup, and the substituted C₁-C₆₀ heteroaryl group may be selected from:

a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxylic acid group or a salt thereof, a sulfonic acid groupor a salt thereof, a phosphoric acid group or a salt thereof, a C₁-C₆₀alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group, and aC₁-C₆₀ alkoxy group;

a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group,and a C₁-C₆₀ alkoxy group, each substituted with at least one selectedfrom a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, anitro group, an amino group, an amidino group, a hydrazine group, ahydrazone group, a carboxylic acid group or a salt thereof, a sulfonicacid group or a salt thereof, a phosphoric acid group or a salt thereof,a C₃-C₁₀ cycloalkyl group, a C₂-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₂-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,a monovalent non-aromatic hetero-condensed polycyclic group, and—Si(Q₁₁)(Q₁₂)(Q₁₃);

a C₃-C₁₀ cycloalkyl group, a C₂-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₂-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic hetero-condensed polycyclic group;

a C₃-C₁₀ cycloalkyl group, a C₂-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₂-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic hetero-condensed polycyclic group, eachsubstituted with at least one selected from a deuterium, —F, —Cl, —Br,—I, a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀alkenyl group, a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀cycloalkyl group, a C₂-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenylgroup, a C₂-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, amonovalent non-aromatic condensed polycyclic group, a monovalentnon-aromatic hetero-condensed polycyclic group, and —Si(Q₂₁)(Q₂₂)(Q₂₃);and

—Si(Q₃₁)(Q₃₂)(Q₃₃); and

Q₁ to Q₁₁ to Q₂₁ to Q₁₃, Q₂₁ to Q₂₃, and Q₃₁ to Q₃₃ may be eachindependently selected from a C₁-C₆₀ alkyl group, a C₆-C₆₀ aryl group, aC₁-C₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclicgroup, and a monovalent non-aromatic hetero-condensed polycyclic group.

For example, in Formulae 1 and 2, R₁₇ to R₂₀, R₂₂, and R₂₃ may be eachindependently selected from a hydrogen, a deuterium, —F, —Cl, —Br, —I, acyano group, a methyl group, an ethyl group, an n-propyl group, aniso-propyl group, a cyclopentyl group, a cyclohexyl group, a phenylgroup, a naphthyl group, and —Si(CH₃)₃, but are not limited thereto.

In another embodiment, in Formula 1, R₁₇ to R₂₀ may be eachindependently selected from a hydrogen, a cyano group, a methyl group,an iso-propyl group, a cyclohexyl group, a phenyl group, and —Si(CH₃)₃,but are not limited thereto.

In another embodiment, in Formula 2, R₂₂ and R₂₃ may be a hydrogen, butare not limited thereto.

In Formula 1, b17 represents the number of R₁₇, and may be selected from1 and 2. When b17 is 2, a plurality of R₁₇s may be identical to ordifferent from each other.

In Formula 1, b18 represents the number of R₁₈, and may be selected from1 and 2. When b18 is 2, a plurality of R₁₈s may be identical to ordifferent from each other.

In Formula 1, b19 represents the number of R₁₉, and may be selected from1, 2, and 3. When b19 is 2 or greater, a plurality of R₁₉s may beidentical to or different from each other.

In Formula 1, b20 represents the number of R₂₀, and may be selected from1 and 2. When b20 is 2, a plurality of R₂₀s may be identical to ordifferent from each other.

In Formula 2, b21 represents the number of R₂₁, and may be selected from1, 2, and 3. For example, in Formula 2, b21 may be 1, but is not limitedthereto. When b21 is 2 or greater, a plurality of R₂₁s may be identicalto or different from each other.

In Formula 2, b22 represents the number of R₂₂, and may be selected from1, 2, 3, 4, and 5. When b22 is 2 or greater, a plurality of R₂₂s may beidentical to or different from each other.

In Formula 2, b23 represents the number of R₂₃, and may be selected from1, 2, 3, 4, 5, 6, 7, and 8. When b23 is 2 or greater, a plurality ofR₂₃s may be identical to or different from each other.

In another embodiment, the pyrene-based compound may be represented byone of Formulae 1A to 1D, but is not limited thereto:

In Formulae 1A to 1D,

L₁, a1, R₁₁ to R₂₀, and b17 to b20 may be defined the same as describedabove.

In another embodiment, the pyrene-based compound may be represented byone of Formulae 1E to 1H, but is not limited thereto:

In Formulae 1E to 1H,

L₁, a1, R₁₁ to R₁₆, R₁₇, and R₁₉ may be defined the same as describedabove.

In another embodiment, the anthracene-based compound may be representedby Formula 2A, but is not limited thereto:

In Formula 2A,

L₂ and R₂₁ may be defined the same as described above.

In another embodiment, the pyrene-based compound may be selected fromthe compounds below, but is not limited thereto:

In another embodiment, the anthracene-based compound may be selectedfrom the compounds below, but is not limited thereto:

The anthracene-based compound may have a phenyl group substituent at the9^(th) carbon position, thereby obtaining high efficiency and longlifespan of the organic light-emitting device. In addition, theanthracene-based compound may have a bulky substituent at the 10^(th)carbon position, thereby obtaining high efficienty and long lifespan ofthe organic light-emitting device, in comparison with an organiclight-emitting device in which a phenyl group is substituted at both the9^(th) and 10^(th) carbon positions of the anthracene-based compound.

At least one pyrene-based compound represented by Formula 1 and at leastone anthracene-based compound represented by Formula 2 may be used(utilized) between a pair of electrodes of the organic light-emittingdevice. For example, at least one pyrene-based compound represented byFormula 1 and at least one anthracene-based compound represented byFormula 2 may be included in an emission layer of the organiclight-emitting device, but are not limited thereto. The pyrene-basedcompound may be a dopant, and the anthracene-based compound may be ahost, but are not limited thereto.

A weight ratio between the pyrene-based compound and theanthracene-based compound may be in a range of about 1:99 to about20:80, but is not limited thereto.

The expression “(an organic layer) includes at least one compoundrepresented by Formula 1” used herein includes a case in which “(anorganic layer) includes one compound of Formula 1 or a case in which (anorganic layer) includes two or more different compounds of Formula 1”.

For example, the organic layer may only include Compound 1 as thecompound of Formula 1. Here, Compound 1 may exist in an emission layerof the organic light-emitting device. Alternatively, the organic layermay include both Compound 1 and Compound 2 as the compounds ofFormula 1. Here, Compound 1 and Compound 2 may be present in anidentical layer (i.e., both Compound 1 and Compound 2 may exist in anemission layer) or in different layers (i.e., Compound 1 may exist in anemission layer and Compound 2 may exist in an electron transport layer).

The organic layer may further include i) a hole transport region that isdisposed between the first electrode and the emission layer, andincludes at least one selected from a hole injection layer (HIL), a holetransport layer (HTL), a buffer layer, and an electron blocking layer(EBL); and ii) an electron transport region that is disposed between theemission layer and the second electrode and includes at least oneselected from a hole blocking layer (HBL), an electron transport layer(ETL), and an electron injection layer (EIL).

The term “organic layer” used herein denotes a single layer and/ormulti-layers disposed between the first electrode and the secondelectrode in the organic light-emitting device. A material included in alayer of the “organic layer” is not limited to an organic material.

The drawing schematically illustrates a cross-sectional view of anorganic light-emitting device 10 according to an embodiment of thepresent invention. The organic light-emitting device 10 includes a firstelectrode 110, an organic layer 150, and a second electrode 190.

Hereinafter, a structure and a preparation method of the organiclight-emitting device 10 will be described in connection with thedrawing.

A substrate may be additionally disposed on a lower part of the firstelectrode 110 or an upper part of the second electrode 190 of theorganic light-emitting device 10 shown in the drawing. The substrate maybe a glass substrate or a transparent plastic substrate having excellentmechanical strength, thermal stability, transparency, surfacesmoothness, ease of handling, and water resistance.

The first electrode 110 may be formed by, for example, depositing orsputtering a material for forming the first electrode on the substrate.When the first electrode 110 is an anode, the material for the firstelectrode 110 may be selected from materials having a high work functionto facilitate hole injection. The first electrode 110 may be areflective electrode, a semi-transmissive electrode, or a transmissiveelectrode. The material for the first electrode 110 may be a transparentand highly conductive material, and examples thereof are indium tinoxide (ITO), indium zinc oxide (IZO), tin oxide (SnO₂), and zinc oxide(ZnO). Alternatively, when the first electrode 110 is asemi-transmissive electrode or a reflective electrode, as the materialfor the first electrode 110, at least one of magnesium (Mg), aluminum(Al), aluminum-lithium (Al—Li), calcium (Ca), magnesium-indium (Mg—In),and magnesium-silver (Mg—Ag) may be used (utilized).

The first electrode 110 may have a single-layered structure or amulti-layered structure including a plurality of layers. For example thefirst electrode 110 may have a three-layered structure of ITO/Ag/ITO,but a structure of the first electrode 110 is not limited thereto.

The organic layer 150 is disposed on the first electrode 110. Theorganic layer 150 may include an emission layer (EML).

The organic layer 150 may further include a hole transport regiondisposed between the first electrode and the EML, and an electrontransport region disposed between the EML and the econd electrode 190.

The hole transport region may include at least one selected from an HIL,an HTL, a buffer layer, and an EML, and the electron transport regionmay include at least one selected from an HBL, an ETL, and an EIL, butthe layers are not limited thereto.

The hole transport region may have a single-layered structure formed ofa single material, a single-layered structure formed of a plurality ofdifferent materials, or a multi-layered structure including a pluralityof layers formed of a plurality of different materials.

For example, the hole transport region may have a single-layeredstructure formed of a plurality of different materials, or a structureof HIL/HTL, a structure of HIL/HTL/buffer layer, a structure ofHIL/buffer layer, a structure of HTL/buffer layer, or a structure ofHIL/HTL/EBL, wherein layers of each structure are sequentially stackedon the first electrode 110 in the stated order, but a structure of thehole transport region is not limited thereto.

When the hole transport region includes an HIL, the HIL may be formed onthe first electrode 110 by using (utilizing) various suitable methodssuch as vacuum deposition, spin coating, casting, Langmuir-Blodgett (LB)deposition, inkjet printing, laser printing, or laser induced thermalimaging (LITI).

When the HIL is formed by vacuum deposition, for example, the vacuumdeposition may be performed at a deposition temperature of about 100° C.to about 500° C., at a vacuum degree of about 10⁻⁸ to about 10⁻³ torr,and a deposition rate of about 0.01 to about 100 Å/sec in considerationof a compound for the HIL to be deposited and a desired structure of theHIL to be formed.

When the HIL is formed by spin coating, the spin coating may beperformed at a coating rate of about 2,000 rpm to about 5,000 rpm, andat a temperature of about 80° C. to about 200° C. in consideration of acompound for the HIL to be deposited and a desired structure of the HILto be formed.

When the hole transport layer includes an HTL, the HTL may be formed onthe first electrode 110 or the HIL by using (utilizing) various suitablemethods such as vacuum deposition, spin coating, casting, LB deposition,inkjet printing, laser printing, or LITI. When the HTL is formed byvacuum deposition or spin coating, the deposition and coating conditionsof the HTL may be referred to the deposition and coating conditions ofthe HIL.

The hole transport region may include at least one of m-MTDATA, TDATA,2-TNATA, NPB, β-NPB, TPD, Spiro-TPD, Spiro-NPB, α-NPB, TAPC, HMTPD,4,4′,4″-tris(N-carbazolyl)triphenylamine (TCTA),polyaniline/dodecylbenzenesulfonic acid (Pani/DBSA),poly(3,4-ethylenedioxythiophene)/poly(4-styrenesulfonate) (PEDOT/PSS),polyaniline/camphor sulfonicacid (Pani/CSA),polyaniline/poly(4-styrenesulfonate) (PANI/PSS), a compound representedby Formula 201, and a compound represented by Formula 202:

In Formulae 201 and 202,

L₂₀₁ to L₂₀₅ may be understood by referring to the description providedherein in connection with L₁;

xa1 to xa4 may be each independently selected from 0, 1, 2, and 3;

xa5 may be selected from 1, 2, 3, 4, and 5; and

R₂₀₁ to R₂₀₅ may be understood by referring to the description providedherein in connection with R₁.

For example, in Formulae 201 and 202,

L₂₀₁ to L₂₀₅ may be each independently selected from:

a phenylene group, a naphthylene group, a fluorenylene group, aspiro-fluorenylene group, a benzofluorene group, a dibenzofluorenegroup, a phenanthrenylene group, an anthracenylene group, a pyrenylenegroup, a chrysenylene group, a pyridinylene group, a pyrazinylene group,a pyrimidinylene group, a pyridazinylene group, a quinolinylene group,an isoquinolinylene group, a quinoxalinylene group, a quinazolinylenegroup, a carbazolylene group, and a triazinylene group; and

a phenylene group, a naphthylene group, a fluorenylene group, aspiro-fluorenylene group, a benzofluorene group, a dibenzofluorenegroup, a phenanthrenylene group, an anthracenylene group, a pyrenylenegroup, a chrysenylene group, a pyridinylene group, a pyrazinylene group,a pyrimidinylene group, a pyridazinylene group, a quinolinylene group,an isoquinolinylene group, a quinoxalinylene group, a quinazolinylenegroup, a carbazolylene group, and a triazinylene group, each substitutedwith at least one selected from a deuterium, —F, —Cl, —Br, —I, ahydroxyl group, a cyano group, a nitro group, an amino group, an amidinogroup, a hydrazine group, a hydrazone group, a carboxylic acid group ora salt thereof, a sulfonic acid group or a salt thereof, a phosphoricacid group or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxygroup, a phenyl group, a naphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenanthrenyl group, an anthracenyl group, a pyrenyl group, achrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, an isoindolyl group, a quinolinyl group, anisoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, acarbazolyl group, and a triazinyl group;

xa1 to xa4 may be each independently selected from 0, 1, and 2;

xa5 may be selected from 1, 2, and 3;

R₂₀₁ to R₂₀₅ may be each independently selected from:

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, and a triazinyl group; and

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, and a triazinyl group, eachsubstituted with at least one selected from a deuterium, —F, —Cl, —Br,—I, a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀alkoxy group, a phenyl group, a naphthyl group, an azulenyl group, afluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, apyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group,a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, anisoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, acarbazolyl group, and a triazinyl group, but are not limited thereto.

The compound of Formula 201 may be represented by Formula 201A:

For example, the compound of Formula 201 may be represented by Formula201A-1, but is not limited thereto:

The compound of Formula 202 may be represented by Formula 202A, but isnot limited thereto:

In Formulae 201A, 201A-1, and 202A, L₂₀₁ to L₂₀₃, xa1 to xa3, xa5, andR₂₀₂ to R₂₀₄ are already described in detail above; R₂₁₁ may beunderstood by referring to the description provided herein in connectionwith R₂₀₃; and R₂₁₃ to R₂₁₆ may be each independently selected from ahydrogen, a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyanogroup, a nitro group, an amino group, an amidino group, a hydrazinegroup, a hydrazone group, a carboxylic acid group or a salt thereof, asulfonic acid group or a salt thereof, a phosphoric acid group or a saltthereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynylgroup, a C₁-C₆₀ alkoxy group, a C₃-C₁₀ cycloalkyl group, a C₂-C₁₀heterocycloalkyl group, a C₃-C₁₀ cycloalkenyl group, a C₂-C₁₀heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀ aryloxy group, aC₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, a monovalentnon-aromatic condensed polycyclic group, and a monovalent non-aromatichetero-condensed polycyclic group.

For example, in Formulae 201A, 201A-1, and 202A,

L₂₀₁ to L₂₀₃ may be each independently selected from:

a phenylene group, a naphthylene group, a fluorenylene group, aspiro-fluorenylene group, a benzofluorene group, a dibenzofluorenegroup, a phenanthrenylene group, an anthracenylene group, a pyrenylenegroup, a chrysenylene group, a pyridinylene group, a pyrazinylene group,a pyrimidinylene group, a pyridazinylene group, a quinolinylene group,an isoquinolinylene group, a quinoxalinylene group, a quinazolinylenegroup, a carbazolylene group, and a triazinylene group; and

a phenylene group, a naphthylene group, a fluorenylene group, aspiro-fluorenylene group, a benzofluorene group, a dibenzofluorenegroup, a phenanthrenylene group, an anthracenylene group, a pyrenylenegroup, a chrysenylene group, a pyridinylene group, a pyrazinylene group,a pyrimidinylene group, a pyridazinylene group, a quinolinylene group,an isoquinolinylene group, a quinoxalinylene group, a quinazolinylenegroup, a carbazolylene group, and a triazinylene group, each substitutedwith at least one selected from a deuterium, —F, —Cl, —Br, —I, ahydroxyl group, a cyano group, a nitro group, an amino group, an amidinogroup, a hydrazine group, a hydrazone group, a carboxylic acid group ora salt thereof, a sulfonic acid group or a salt thereof, a phosphoricacid group or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxygroup, a phenyl group, a naphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenanthrenyl group, an anthracenyl group, a pyrenyl group, achrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group,a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and atriazinyl group;

xa1 to xa3 may be each independently selected from 0 and 1;

R₂₀₃, R₂₁₁, and R₂₁₂ may be each independently selected from:

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, and a triazinyl group; and

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, aphenanthrenyl group, an anthracenyl group, a pyrenyl group, a chrysenylgroup, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, apyridazinyl group, a quinolinyl group, an isoquinolinyl group, aquinoxalinyl group, a quinazolinyl group, a carbazolyl group, and atriazinyl group, each substituted with at least one selected from adeuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxylic acid group or a salt thereof, a sulfonic acid groupor a salt thereof, a phosphoric acid group or a salt thereof, a C₁-C₂₀alkyl group, a C₁-C₂₀ alkoxy group, a phenyl group, a naphthyl group, afluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, apyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group,a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, anisoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, acarbazolyl group, and a triazinyl group;

R₂₁₃ and R₂₁₄ may be each independently selected from:

a C₁-C₂₀ alkyl group and a C₁-C₂₀ alkoxy group;

a C₁-C₂₀ alkyl group and a C₁-C₂₀ alkoxy group, each substituted with atleast one selected from a deuterium, —F, —Cl, —Br, —I, a hydroxyl group,a cyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxylic acid group or a saltthereof, a sulfonic acid group or a salt thereof, a phosphoric acidgroup or a salt thereof, a phenyl group, a naphthyl group, a fluorenylgroup, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, apyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group,a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, anisoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, acarbazolyl group, and a triazinyl group;

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, and a triazinyl group; and

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, and a triazinyl group, eachsubstituted with at least one selected from a deuterium, —F, —Cl, —Br,—I, a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenanthrenyl group, an anthracenyl group, a pyrenyl group, achrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group,a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and atriazinyl group;

R₂₁₅ and R₂₁₆ may be each independently selected from:

a hydrogen, a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyanogroup, a nitro group, an amino group, an amidino group, a hydrazinegroup, a hydrazone group, a carboxylic acid group or a salt thereof, asulfonic acid group or a salt thereof, a phosphoric acid group or a saltthereof, a C₁-C₂₀ alkyl group, and a C₁-C₂₀ alkoxy group;

a C₁-C₂₀ alkyl group and a C₁-C₂₀ alkoxy group, each substituted with atleast one selected from a deuterium, —F, —Cl, —Br, —I, a hydroxyl group,a cyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxylic acid group or a saltthereof, a sulfonic acid group or a salt thereof, a phosphoric acidgroup or a salt thereof, a phenyl group, a naphthyl group, a fluorenylgroup, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, apyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group,a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, anisoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, acarbazolyl group, and a triazinyl group;

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, and a triazinyl group; and

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, and a triazinyl group, eachsubstituted with at least one selected from a deuterium, —F, —Cl, —Br,—I, a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenanthrenyl group, an anthracenyl group, a pyrenyl group, achrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group,a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and atriazinyl group; and

xa5 may be selected from 1 and 2.

In Formulae 201A and 201A-1, R₂₁₃ and R₂₁₄ may link to each other toform a saturated ring or an unsaturated ring.

The compound represented by Formula 201 and the compound represented byFormula 202 may each include Compounds HT1 to HT20, but are not limitedthereto:

A thickness of the hole transport region may be in a range of about 100Å to about 10,000 Å, for example, about 100 Å to about 1,000 Å. When thehole transport region includes both an HIL and an HTL, a thickness ofthe HTL may be in a range of about 100 Å to about 10,000 Å, for example,about 100 Å to about 1,000 Å, and a thickness of the HTL may be in arange of about 50 Å to about 2,000 Å, for example, about 100 Å to about1,500 Å. In one embodiment, when the thicknesses of the hole transportregion, the HIL, and the HTL are within these ranges, satisfactory holetransporting properties of the organic light-emitting device areobtained without a substantial increase in driving voltage.

The hole transport region may further include, in addition to thesematerials, a charge-generating material to improve conductivity of theorganic light-emitting device. The charge-generating material may behomogeneously or non-homogeneously dispersed in the hole transportregion.

The charge-generating material may be, for example, a p-dopant. Thep-dopant may be one of a quinone derivative, a metal oxide, and a cyanogroup-containing compound, but is not limited thereto. For example,non-limiting examples of the p-dopant are a quinone derivative, such asa tetracyanoquinonedimethane (TCNQ) and2,3,5,6-tetrafluoro-tetracyano-1,4-benzoquinondimethane (F4-TCNQ); ametal oxide, such as a tungsten oxide or a molybden oxide; and CompoundHT-D1, but are not limited thereto.

The hole transport region may further include, in addition to the HILand the HTL, at least one of a buffer layer and an EBL. The buffer layermay compensate for an optical resonance distance according to awavelength of light emitted from the EML, thereby increasinglight-emission efficiency of a formed organic light-emitting device. Foruse (usage) as a material included in the buffer layer, materials thatare included in the hole transport region may be used (utilized). TheEBL reduces or prevents injection of electrons from the electrontransport region.

The EML may be formed on the first electrode 100 or the hole transportregion by using (utilizing) various suitable methods such as vacuumdeposition, spin coating, casting, LB deposition, inkjet printing, laserprinting, or LITI. When the EML is formed by vacuum deposition or spincoating, the deposition and coating conditions of the EML may bereferred to the deposition and coating conditions of the HIL.

When the organic light-emitting device 10 is a full-color organiclight-emitting device, the EML may be patterned into a red EML, a greenEML, and a blue EML, according to individual sub-pixels. Alternatively,the EML may have a stacked structure of a red EML, a green EML, and ablue EML, or may include a red light-emitting material, a greenlight-emitting material, and a blue light-emitting material, which aremixed with each other in a single layer, to emit white light.

The EML may include a host and a dopant.

The EML may include, as a host, at least one anthracene-based compoundof Formula 2.

The EML may include, as a dopant, at least one pyrene-based compound ofFormula 1.

The EML may emit blue light.

The host may further include, in addition to the anthracene-basedcompound of Formula 2, at least one of TPBi, TBADN, ADN (also referredto as “DNA”), CBP, CDBP, and TCP:

The dopant may further include, in addition to the pyrene-based compoundof Formula 1, at least one of DPAVBi, BDAVBi, TBPe, DCM, DCJTB, Coumarin6, and C545T:

An amount of the dopant in the EML may be generally within a range ofabout 0.01 to about 15 parts by weight based on about 100 parts byweight of a host, but the amount is not limited thereto.

A thickness of the EML may be in a range of about 100 Å to about 1,000Å, for example, about 200 Å to about 600 Å. In one embodiment, when thethickness of the EML is within this range, excellent light-emittingproperties of the organic light-emitting device are obtained without asubstantial increase in driving voltage.

Then, an electron transport region may be disposed on the EML.

The electron transport region may include at least one selected from anHBL, an ETL, and an EIL, but the layers are not limited thereto.

For example, the electron transport region may have a structure ofETL/EIL or a structure of HBL/ETL/EIL, wherein layers of each structureare sequentially stacked on the EML, but a structure of the electrontransport region is not limited thereto.

The electron transport region may include an HBL. When a phosphorescentdopant is used (utilized) in the EML, the HBL may be formed to reduce orprevent diffusion of triplet excitons or holes into the ETL.

When the electron region includes the HBL, the HBL may be formed on theEML by using (utilizing) various suitable methods such as vacuumdeposition, spin coating, casting, LB deposition, inkjet printing, laserprinting, or LITI. When the HBL is formed by vacuum deposition or spincoating, the deposition and coating conditions of the HBL may bereferred to the deposition and coating conditions of the HIL. The HBLmay include, for example, at least one of BCP and Bphen, but is notlimited thereto:

A thickness of the HBL may be in a range of about 20 Å to about 1,000 Å,for example, about 30 Å to about 300 Å. In one embodiment, when athickness of the HBL is within this range, excellent hole blockingproperties of the organic light-emitting device are obtained without asubstantial increase in driving voltage.

The electron transport region may include the ETL. The ETL may be formedon the EML by using (utilizing) various suitable methods such as vacuumdeposition, spin coating, casting, LB deposition, inkjet printing, laserprinting, or LITI. When the ETL is formed by vacuum deposition or spincoating, the deposition and coating conditions of the ETL may bereferred to the deposition and coating conditions of the HIL.

The ETL may further include at least one selected from BCP, Bphen, Alq₃,Balq, TAZ, and NTAZ:

The ETL may include at least one compound represented by Formula 601:

Ar₆₀₁-[(L₆₀₁)_(xe1)-E₆₀₁]_(xe2)  Formula 601

In Formula 601,

Ar₆₀₁ may be selected from a naphthalene, a heptalene, a fluorenene, aspiro-fluorene, a benzofluorene, a dibenzofluorene, a phenalene, aphenanthrene, an anthracene, a fluoranthene, a triphenylene, a pyrene, achrysene, a naphthacene, a picene, a perylene, a pentaphene, and anindenoanthracene;

a naphthalene, a heptalene, a fluorenene, a spiro-fluorene, abenzofluorene, a dibenzofluorene, a phenalene, a phenanthrene, ananthracene, a fluoranthene, a triphenylene, a pyrene, a chrysene, anaphthacene, a picene, a perylene, a pentaphene, and anindenoanthracene, each substituted with at least one selected from adeuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxylic acid group or a salt thereof, a sulfonic acid groupor a salt thereof, a phosphoric acid group or a salt thereof, a C₁-C₆₀alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group, a C₁-C₆₀alkoxy group, a C₃-C₁₀ cycloalkyl group, a C₃-C₁₀ heterocycloalkylgroup, a C₃-C₁₀ cycloalkenyl group, a C₃-C₁₀ heterocycloalkenyl group, aC₆-C₆₀ aryl group, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, aC₁-C₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclicgroup, a monovalent non-aromatic hetero-condensed polycyclic group, and—Si(Q₃₀₁)(Q₃₀₂)(Q₃₀₃) (wherein Q₃₀₁ to Q₃₀₃ may be each independentlyselected from a hydrogen, a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group,a C₆-C₆₀ aryl group, and a C₁-C₆₀ heteroaryl group);

L₆₀₁ may be understood by referring to the description provided inconnection with L₂₀₁;

E₆₀₁ may be selected from:

a pyrrolyl group, a thiophenyl group, a furanyl group, an imidazolylgroup, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, anoxazolyl group, an isooxazolyl group, a pyridinyl group, a pyrazinylgroup, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, anindolyl group, an indazolyl group, a purinyl group, a quinolinyl group,an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, anaphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, acinnolinyl group, a carbazolyl group, a phenanthridinyl group, anacridinyl group, a phenanthrolinyl group, a phenazinyl group, abenzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, anisobenzothiazolyl group, a benzooxazolyl group, an isobenzooxazolylgroup, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, atriazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, abenzocarbazolyl group, and a dibenzocarbazolyl group; and

a pyrrolyl group, a thiophenyl group, a furanyl group, an imidazolylgroup, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, anoxazolyl group, an isooxazolyl group, a pyridinyl group, a pyrazinylgroup, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, anindolyl group, an indazolyl group, a furinyl group, a quinolinyl group,an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, anaphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, acinnolinyl group, a carbazolyl group, a phenanthridinyl group, anacridinyl group, a phenanthrolinyl group, a phenazinyl group, abenzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, anisobenzothiazolyl group, a benzooxazolyl group, an isobenzooxazolylgroup, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, atriazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, abenzocarbazolyl group, and a dibenzocarbazolyl group, each substitutedwith at least one selected from a deuterium, —F, —Cl, —Br, —I, ahydroxyl group, a cyano group, a nitro group, an amino group, an amidinogroup, a hydrazine group, a hydrazone group, a carboxylic acid group ora salt thereof, a sulfonic acid group or a salt thereof, a phosphoricacid group or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxygroup, a phenyl group, a pentalenyl group, an indenyl group, a naphthylgroup, an azulenyl group, a heptalenyl group, an indacenyl group, anacenaphthyl group, a fluorenyl group, a spiro-fluorenyl group, abenzofluorenyl group, a dibenzofluorenyl group, a phenalenyl group, aphenanthrenyl group, an anthracenyl group, a fluoranthenyl group, atriphenylenyl group, a pyrenyl group, a chrysenyl group, a naphthacenylgroup, a picenyl group, a perylenyl group, a pentaphenyl group, ahexacenyl group, a pentacenyl group, a rubicenyl group, a coronenylgroup, an ovalenyl group, a pyrrolyl group, a thiophenyl group, afuranyl group, an imidazolyl group, a pyrazolyl group, a thiazolylgroup, an isothiazolyl group, an oxazolyl group, an isooxazolyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, an isoindolyl group, an indolyl group, an indazolyl group, afurinyl group, a quinolinyl group, an isoquinolinyl group, abenzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, aquinoxalinyl group, a quinazolinyl group, a cinnolinyl group, acarbazolyl group, a phenanthridinyl group, an acridinyl group, aphenanthrolinyl group, a phenazinyl group, a benzoimidazolyl group, abenzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group,a benzooxazolyl group, an isobenzooxazolyl group, a triazolyl group, atetrazolyl group, an oxadiazolyl group, a triazinyl group, adibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolylgroup, and a dibenzocarbazolyl group;

xe1 may be selected from 0, 1, 2, and 3; and

xe2 may be selected from 1, 2, 3, and 4.

Alternatively, the ETL may include at least one compound represented byFormula 602:

In Formula 602,

X₆₁₁ may be N or C-(L₆₁₁)_(xe611)-R₆₁₁, X₆₁₂ may be N orC-(L₆₁₂)_(xe612)-R₆₁₂, X₆₁₃ may be N or C-(L₆₁₃)_(xe613)-R₆₁₃, and atleast one of X₆₁₁ to X₆₁₃ may be N;

L₆₁₁ to L₆₁₆ may be understood by referring to the description providedherein in connection L₂₀₁;

R₆₁₁ to R₆₁₆ may be each independently selected from:

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, aphenanthrenylene group, an anthracenyl group, a pyrenyl group, achrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group,a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and atriazinyl group; and

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, aphenanthrenylene group, an anthracenyl group, a pyrenyl group, achrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group,a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and atriazinyl group, each substituted with at least one selected from adeuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxylic acid group or a salt thereof, a sulfonic acid groupor a salt thereof, a phosphoric acid group or a salt thereof, a C₁-C₂₀alkyl group, a C₁-C₂₀ alkoxy group, a phenyl group, a naphthyl group, anazulenyl group, a fluorenyl group, a spiro-fluorenyl group, abenzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylenegroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, and a triazinyl group;

xe611 to xe616 may be each independently selected from 0, 1, 2, and 3.

The compound of Formula 601 and the compound of 602 may each include atleast one of Compounds ET1 to ET15:

A thickness of the ETL may be in a range of about 100 Å to about 1,000Å, for example, about 150 Å to about 500 Å. In one embodiment, when thethickness of the ETL is within this range, satisfactory electrontransport properties of the organic light-emitting device are obtainedwithout a substantial increase in driving voltage.

The ETL may further include, in addition to the materials describedabove, a metal-containing material.

The metal-containing material may include a Li complex. The Li complexmay include, for example, Compound ET-D1 (lithium quinolate, LiQ) orCompound ET-D2:

The electron transport region may include an EIL that facilitatesinjection of electrons from the second electrode 190.

The EIL may be formed on the ETL by using (utilizing) various suitablemethods such as vacuum deposition, spin coating, casting, LB deposition,inkjet printing, laser printing, or LITI. When the EIL is formed byvacuum deposition or spin coating, the deposition and coating conditionsof the EIL may be referred to the deposition and coating conditions ofthe HIL.

The EIL may include at least one selected from LiF, NaCl, CsF, Li₂O,BaO, and LiQ.

A thickness of the EIL may be in a range of about 1 Å to about 100 Å,for example, about 3 Å to about 90 Å. In one embodiment, when thethickness of the electron injection layer is within this range,satisfactory electron injection properties of the organic light-emittingdevice are obtained without a substantial increase in driving voltage.

The second electrode 190 is disposed on the organic layer 150. Thesecond electrode 190 may be a cathode, which is an electron injectionelectrode. In this regard, a material for forming the second electrode190 may include a metal, an alloy, an electrically conductive compound,or a mixture thereof, which have a low work function. Detailed examplesof the material for forming the second electrode 190 are lithium (Li),magnesium (Mg), aluminum (Al), aluminum-lithium (Al—Li), calcium (Ca),magnesium-indium (Mg—In), and magnesium-silver (Mg—Ag). Alternatively,the material for forming the second electrode 190 may be ITO or IZO. Thesecond electrode 190 may be a reflective electrode, a semi-transmissiveelectrode, or a transmissive electrode.

Hereinbefore, the organic light-emitting device has been described withreference to the drawing, but is not limited thereto.

A C₁-C₆₀ alkyl group used herein refers to a linear or branchedaliphatic hydrocarbon monovalent group having 1 to 60 carbon atoms, anddetailed examples thereof are a methyl group, an ethyl group, a propylgroup, an isobutyl group, a sec-butyl group, a ter-butyl group, a pentylgroup, an iso-amyl group, and a hexyl group. A C₁-C₆₀ alkylene groupused herein refers to a divalent group having the same structure as theC₁-C₆₀ alkyl group.

A C₁-C₆₀ alkoxy group used herein refers to a monovalent grouprepresented by —OA₁₀₁ (wherein A₁₀₁ is the C₁-C₆₀ alkyl group), anddetailed examples thereof are a methoxy group, an ethoxy group, and anisopropyloxy group.

A C₂-C₆₀ alkenyl group used herein refers to a hydrocarbon group havingat least one carbon double bond in the middle or terminal of the C₂-C₆₀alkyl group, and detailed examples thereof are an ethenyl group, aprophenyl group, and a butenyl group. A C₂-C₆₀ alkenylene group usedherein refers to a divalent group having the same structure as theC₂-C₆₀ alkenyl group.

A C₂-C₆₀ alkynyl group used herein refers to a hydrocarbon group havingone carbon triple bond in the middle or terminal of the C₂-C₆₀ alkylgroup, and detailed examples thereof are an ethynyl group and a propynylgroup. A C₂-C₆₀ alkynylene group used herein refers to a divalent grouphaving the same structure as the C₂-C₆₀ alkynyl group.

A C₃-C₁₀ cycloalkyl group used herein refers to a monovalent hydrocarbonmonocyclic group having 3 to 10 carbon atoms, and detailed examplesthereof are a cyclopropyl group, a cyclobutyl group, a cyclopentylgroup, a cyclohexyl group, and a cycloheptyl group. A C₃-C₁₀cycloalkylene group used herein refers to a divalent group having thesame structure as the C₃-C₁₀ cycloalkyl group.

A C₂-C₁₀ heterocycloalkyl group used herein refers to a monovalentmonocyclic group having at least one hetero atom selected from N, O, P,and S as a ring-forming atom and 2 to 10 carbon atoms, and detailedexamples thereof are a tetrahydrofuranyl group and atetrahydrothiophenyl group. A C₂-C₁₀ heterocycloalkylene group usedherein refers to a divalent group having the same structure as theC₂-C₁₀ heterocycloalkyl group.

A C₃-C₁₀ cycloalkenyl group used herein refers to a monovalentmonocyclic group that has 3 to 10 carbon atoms and at least one doublebond in the ring thereof and does not have aromacity, and detailedexamples thereof are a cyclopentenyl group, a cyclohexenyl group, and acycloheptenyl group. A C₃-C₁₀ cycloalkenylene group used herein refersto a divalent group having the same structure as the C₃-C₁₀ cycloalkenylgroup.

A C₂-C₁₀ heterocycloalkenyl group used herein refers to a monovalentmonocyclic group that has at least one hetero atom selected from N, O,P, and S as a ring-forming atom, 2 to 10 carbon atoms, and at least onedouble bond in its ring. Detailed examples of the C₂-C₁₀heterocycloalkenyl group are a 2,3-hydrofuranyl group and a2,3-hydrothiophenyl group. A C₂-C₁₀ heterocycloalkenylene group usedherein refers to a divalent group having the same structure as theC₂-C₁₀ heterocycloalkenyl group.

A C₆-C₆₀ aryl group used herein refers to a monovalent group having acarbocyclic aromatic system having 6 to 60 carbon atoms, and a C₆-C₆₀arylene group used herein refers to a divalent group having acarbocyclic aromatic system having 6 to 60 carbon atoms. Detailedexamples of the C₆-C₆₀ aryl group are a phenyl group, a naphthyl group,an anthracenyl group, a phenanthrenyl group, a pyrenyl group, and achrysenyl group. When the C₆-C₆₀ aryl group and the C₆-C₆₀ arylene groupeach include two or more rings, the rings may be fused to each other.

A C₁-C₆₀ heteroaryl group used herein refers to a monovalent grouphaving a carboncyclic aromatic system that has at least one hetero atomselected from N, O, P, and S as a ring-forming atom, and 1 to 60 carbonatoms. A C₂-C₆₀ heteroarylene group used herein refers to a divalentgroup having a carbocyclic aromatic system that has at least one heteroatom selected from N, O, P, and S as a ring-forming atom, and 2 to 60carbon atoms. Detailed examples of the C₂-C₆₀ heteroaryl group are apyridinyl group, a pyrimidinyl group, a pyrazinyl group, a pyridazinylgroup, a triazinyl group, a quinolinyl group, and an isoquinolinylgroup. When the C₂-C₆₀ heteroaryl group and the C₂-C₆₀ heteroarylenegroup each include two or more rings, the rings may be fused to eachother.

A C₆-C₆₀ aryloxy group used herein indicates OA₁₀₂ (wherein A₁₀₂ is theC₆-C₆₀ aryl group), and a C₆-C₆₀ arylthio group used herein indicatesSA₁₀₃ (wherein A₁₀₃ is the C₆-C₆₀ aryl group).

A monovalent non-aromatic condensed polycyclic group used herein refersto a monovalent group (for example, having 8 to 60 carbon atoms) thathas two or more rings condensed to each other, only carbon atoms as aring forming atom, and non-aromacity in the entire molecular structure.A detailed example of the non-aromatic condensed polycyclic group is afluorenyl group. A divalent non-aromatic condensed polycyclic group usedherein refers to a divalent group having the same structure as themonovalent non-aromatic condensed polycyclic group.

A monovalent non-aromatic hetero-condensed polycyclic group used hereinrefers to a monovalent group (for example, having 2 to 60 carbon atoms)that has two or more rings condensed to each other, has a hetero atomselected from N, O, P, and S, other than carbon atoms, as a ring formingatom, and has non-aromacity in the entire molecular structure. Anexample of the monovalent non-aromatic hetero-condensed polycyclic groupis a carbazolyl group. A divalent non-aromatic condensedheteropolycyclic group used herein refers to a divalent group having thesame structure as the monovalent non-aromatic condensed heteropolycyclicgroup.

In the present specification, at least one substituent of thesubstituted C₃-C₁₀ cycloalkylene group, the substituted C₂-C₁₀heterocycloalkylene group, the substituted C₃-C₁₀ cycloalkenylene group,the substituted C₂-C₁₀ heterocycloalkenylene group, the substitutedC₆-C₆₀ arylene group, the substituted C₂-C₆₀ heteroarylene group, thesubstituted divalent non-aromatic condensed polycyclic group, thesubstituted divalent non-aromatic hetero-condensed polycyclic group, thesubstituted C₁-C₆₀ alkyl group, the substituted C₂-C₆₀ alkenyl group,the substituted C₂-C₆₀ alkynyl group, the substituted C₁-C₆₀ alkoxygroup, the substituted C₃-C₁₀ cycloalkyl group, the substituted C₂-C₁₀heterocycloalkyl group, the substituted C₃-C₁₀ cycloalkenyl group, thesubstituted C₂-C₁₀ heterocycloalkenyl group, the substituted C₆-C₆₀ arylgroup, the substituted C₆-C₆₀ aryloxy group, the substituted C₆-C₆₀arylthio group, the substituted C₂-C₆₀ heteroaryl group, the substitutedmonovalent non-aromatic condensed polycyclic group, and the substitutedmonovalent non-aromatic hetero-condensed polycyclic group may beselected from:

a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxylic acid group or a salt thereof, a sulfonic acid groupor a salt thereof, a phosphoric acid group or a salt thereof, a C₁-C₆₀alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group, and aC₁-C₆₀ alkoxy group;

a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group,and a C₁-C₆₀ alkoxy group, each substituted with at least one selectedfrom:

a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxylic acid group or a salt thereof, a sulfonic acid groupor a salt thereof, a phosphoric acid group or a salt thereof, acyclopentyl group, a cyclohexyl group, a cycloheptyl group, acyclopentenyl group, a cycloheptenyl group, a phenyl group, a pentalenylgroup, an indenyl group, a naphthyl group, an azulenyl group, aheptalenyl group, an indacenyl group, an acenaphthyl group, a fluorenylgroup, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, ananthracenyl group, a fluoranthenyl group, a triphenylenyl group, apyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group,a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenylgroup, a rubicenyl group, a coronenyl group, an ovalenyl group, apyrrolyl group, a thiophenyl group, a furanyl group, an imidazolylgroup, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, anoxazolyl group, an isooxazolyl group, a pyridinyl group, a pyrazinylgroup, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, anindolyl group, an indazolyl group, a furinyl group, a quinolinyl group,an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, anaphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, acinnolinyl group, a carbazolyl group, a phenanthridinyl group, anacridinyl group, a phenanthrolinyl group, a phenazinyl group, abenzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, anisobenzothiazolyl group, a benzooxazolyl group, an isobenzooxazolylgroup, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, atriazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, abenzocarbazolyl group, a dibenzocarbazolyl group, an imidazopyridinylgroup, —N(Q₁₁)(Q₁₂), —Si(Q₁₃)(Q₁₄)(Q₁₅), and —B(Q₁₆)(Q₁₇);

a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, acyclopentenyl group, a cycloheptenyl group, a phenyl group, a pentalenylgroup, an indenyl group, a naphthyl group, an azulenyl group, aheptalenyl group, an indacenyl group, an acenaphthyl group, a fluorenylgroup, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, ananthracenyl group, a fluoranthenyl group, a triphenylenyl group, apyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group,a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenylgroup, a rubicenyl group, a coronenyl group, an ovalenyl group, apyrrolyl group, a thiophenyl group, a furanyl group, an imidazolylgroup, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, anoxazolyl group, an isooxazolyl group, a pyridinyl group, a pyrazinylgroup, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, anindolyl group, an indazolyl group, a furinyl group, a quinolinyl group,an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, anaphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, acinnolinyl group, a carbazolyl group, a phenanthridinyl group, anacridinyl group, a phenanthrolinyl group, a phenazinyl group, abenzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, anisobenzothiazolyl group, a benzooxazolyl group, an isobenzooxazolylgroup, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, atriazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, abenzocarbazolyl group, a dibenzocarbazolyl group, and animidazopyridinyl group;

a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, acyclopentenyl group, a cycloheptenyl group, a phenyl group, a pentalenylgroup, an indenyl group, a naphthyl group, an azulenyl group, aheptalenyl group, an indacenyl group, an acenaphthyl group, a fluorenylgroup, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, ananthracenyl group, a fluoranthenyl group, a triphenylenyl group, apyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group,a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenylgroup, a rubicenyl group, a coronenyl group, an ovalenyl group, apyrrolyl group, a thiophenyl group, a furanyl group, an imidazolylgroup, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, anoxazolyl group, an isooxazolyl group, a pyridinyl group, a pyrazinylgroup, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, anindolyl group, an indazolyl group, a furinyl group, a quinolinyl group,an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, anaphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, acinnolinyl group, a carbazolyl group, a phenanthridinyl group, anacridinyl group, a phenanthrolinyl group, a phenazinyl group, abenzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, anisobenzothiazolyl group, a benzooxazolyl group, an isobenzooxazolylgroup, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, atriazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, abenzocarbazolyl group, a dibenzocarbazolyl group, and animidazopyridinyl group, each substituted with at least one selected froma deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxylic acid group or a salt thereof, a sulfonic acid groupor a salt thereof, a phosphoric acid group or a salt thereof, a C₁-C₆₀alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group, a C₁-C₆₀alkoxy group, a phenyl group, a naphthyl group, —N(Q₂₁)(Q₂₂,—Si(Q₂₃)(Q₂₄)(Q₂₅), and —B(Q₂₆)(Q₂₇); and

—N(Q₃₁)(Q₃₂), —Si(Q₃₃)(Q₃₄)(Q₃₅), and —B(Q₃₆)(Q₃₇); and

Q₁ to Q₇, Q₁₁ to Q₁₇, Q₂₁ to Q₂₇, and Q₃₁ to Q₃₇ may be eachindependently selected from a hydrogen, a C₁-C₆₀ alkyl group, a C₂-C₆₀alkenyl group, a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, acyclopentyl group, a cyclohexyl group, a cycloheptyl group, acyclopentenyl group, a cycloheptenyl group, a phenyl group, a pentalenylgroup, an indenyl group, a naphthyl group, an azulenyl group, aheptalenyl group, an indacenyl group, an acenaphthyl group, a fluorenylgroup, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, ananthracenyl group, a fluoranthenyl group, a triphenylenyl group, apyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group,a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenylgroup, a rubicenyl group, a coronenyl group, an ovalenyl group, apyrrolyl group, a thiophenyl group, a furanyl group, an imidazolylgroup, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, anoxazolyl group, an isooxazolyl group, a pyridinyl group, a pyrazinylgroup, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, anindolyl group, an indazolyl group, a furinyl group, a quinolinyl group,an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, anaphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, acinnolinyl group, a carbazolyl group, a phenanthridinyl group, anacridinyl group, a phenanthrolinyl group, a phenazinyl group, abenzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, anisobenzothiazolyl group, a benzooxazolyl group, an isobenzooxazolylgroup, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, atriazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, abenzocarbazolyl group, a dibenzocarbazolyl group, and animidazopyridinyl group.

Example 1

An anode was prepared by cutting a Corning 15 Ω/cm² (1200 Å) ITO glasssubstrate to a size of 50 mm×50 mm×0.7 mm, ultrasonically cleaning theglass substrate by using (utilizing) isopropyl alcohol for 5 minutes andpure water for 5 minutes, and irradiating UV light for 10 minutesthereto and exposing to ozone to clean. Then, the anode was loaded ontoa vacuum deposition apparatus.

HT13 was deposited on the ITO anode to form an HIL having a thickness of500 Å, and HT3 was deposited on the HIL to form an HTL having athickness of 450 A. Then, H1 (host) and D1 (dopant) were co-deposited onthe EML at a weight ratio of 95:5 to form an EML having a thickness of300 Å.

ET1 was deposited on the EML to form an ETL having a thickness of 250 Å,LiF was deposited on the ETL to form an EIL having a thickness of 5 Å,and Al was deposited on the EIL to form a cathode having a thickness of1,500 Å, thereby manufacturing an organic light-emitting device.

Example 2

An organic light-emitting device was manufactured in the same manner asin Example 1, except that in forming the EML, D2 was used (utilized)instead of D1.

Example 3

An organic light-emitting device was manufactured in the same manner asin Example 1, except that in forming the EML, D3 was used (utilized)instead of D1.

Example 4

An organic light-emitting device was manufactured in the same manner asin Example 1, except that in forming the EML, D4 was used (utilized)instead of D1.

Example 5

An organic light-emitting device was manufactured in the same manner asin Example 1, except that in forming the EML, D5 was used (utilized)instead of D1.

Example 6

An organic light-emitting device was manufactured in the same manner asin Example 1, except that in forming the EML, D6 was used (utilized)instead of D1.

Example 7

An organic light-emitting device was manufactured in the same manner asin Example 1, except that in forming the EML, H2 was used (utilized)instead of H1.

Example 8

An organic light-emitting device was manufactured in the same manner asin Example 1, except that in forming the EML, H3 was used (utilized)instead of H1.

Example 9

An organic light-emitting device was manufactured in the same manner asin Example 1, except that in forming the EML, H4 was used (utilized)instead of H1.

Example 10

An organic light-emitting device was manufactured in the same manner asin Example 1, except that in forming the EML, Compound H2 was used(utilized) instead of Compound H1, and Compound D2 was used (utilized)instead of Compound D1.

Example 11

An organic light-emitting device was manufactured in the same manner asin Example 1, except that in forming the EML, Compound H2 was used(utilized) instead of Compound H1, and Compound D3 was used (utilized)instead of Compound D1.

Example 12

An organic light-emitting device was manufactured in the same manner asin Example 1, except that in forming the EML, Compound H2 was used(utilized) instead of Compound H1 and Compound D5 was used (utilized)instead of Compound D1.

Comparative Example 1

An organic light-emitting device was manufactured in the same manner asin Example 1, except that in forming the EML, Compound A was used(utilized) instead of H1.

Comparative Example 2

An organic light-emitting device was manufactured in the same manner asin Example 1, except that in forming the EML, Compound B was used(utilized) instead of H1.

Comparative Example 3

An organic light-emitting device was manufactured in the same manner asin Example 1, except that in forming the EML, Compound C was used(utilized) instead of H1.

Comparative Example 4

An organic light-emitting device was manufactured in the same manner asin Example 1, except that in forming the EML, Compound D was used(utilized) instead of D1.

Comparative Example 5

An organic light-emitting device was manufactured in the same manner asin Example 1, except that in forming the EML, Compound E was used(utilized) instead of D1.

Evaluation Example 1

Efficiencies, emitting colors, and lifespans of the organiclight-emitting devices of Examples 1 to 12 and Comparative Examples 1 to5 were evaluated by using a Kethley SMU 236 device and a PR650 luminancemeter. The results obtained therefrom are shown in Table 1. Theefficiencies were measured at a current density of 10 mA/cm², and theemitting colors and the lifespans were measured at a current density of50 mA/cm². The lifespans measured herein refer to times required toachieve 80% of the initial brightness of the organic light-emittingdevices after being driven.

TABLE 1 Effi- Life- ciency span Host Dopant (cd/A) (time) CIE_x CIE_yExample 1 H1 D1 5.8 110 0.138 0.125 Example 2 H1 D2 5.6 120 0.138 0.119Example 3 H1 D3 5.3 90 0.137 0.125 Example 4 H1 D4 5.3 100 0.137 0.120Example 5 H1 D5 5.9 120 0.138 0.124 Example 6 H1 D6 5.4 110 0.137 0.125Example 7 H2 D1 5.9 120 0.138 0.125 Example 8 H3 D1 5.8 130 0.138 0.125Example 9 H4 D1 5.6 110 0.138 0.125 Example 10 H2 D2 5.6 120 0.138 0.119Example 11 H2 D3 5.4 100 0.137 0.125 Example 12 H2 D5 5.8 110 0.1380.124 Comparative Com- D1 5.1 70 0.138 0.125 Example 1 pound AComparative Com- D1 5.0 60 0.138 0.125 Example 2 pound B ComparativeCom- D1 5.4 100 0.138 0.125 Example 3 pound C Comparative H1 Com- 5.3100 0.145 0.132 Example 4 pound D Comparative H1 Com- 5.2 70 0.148 0.140Example 5 pound E

According to Table 1 above, the organic light-emitting devices ofExamples 1 to 12 showed excellent efficiencies, emitting colors, andlifespans, compared to those of the organic light-emitting devices ofComparative Examples 1 to 5.

As described above, according to the one or more of the aboveembodiments of the present invention, the organic light-emitting devicehas excellent properties, such as high color purity, high brightness,and a long lifespan.

It should be understood that the example embodiments described thereinshould be considered in a descriptive sense only and not for purposes oflimitation. Descriptions of features or aspects within each embodimentshould typically be considered as available for other similar featuresor aspects in other embodiments.

While one or more embodiments of the present invention have beendescribed with reference to the FIGURE, it will be understood by thoseof ordinary skill in the art that various changes in form and detailsmay be made therein without departing from the spirit and scope of thepresent invention as defined by the following claims, and equivalentsthereof.

What is claimed is:
 1. An organic light-emitting device comprising: afirst electrode; a second electrode facing the first electrode; and anorganic layer between the first electrode and the second electrode andcomprising an emission layer, wherein the organic layer comprises atleast one pyrene-based compound represented by Formula 1 and at leastone anthracene-based compound represented by Formula 2:

wherein in Formulae 1 and 2, L₁ is selected from a substituted orunsubstituted C₆-C₆₀ arylene group and a substituted or unsubstitutedC₁-C₆₀ heteroarylene group; L₂ is selected from a substituted orunsubstituted C₇-C₆₀ arylene group and a substituted or unsubstitutedC₁-C₆₀ heteroarylene group; a1 and a2 are each independently selectedfrom 1, 2, 3, and 4; R₁₁ to R₁₆ are each independently selected from asubstituted or unsubstituted C₁-C₆₀ alkyl group, a substituted orunsubstituted C₃-C₁₀ cycloalkyl group, a substituted or unsubstitutedC₆-C₆₀ aryl group, a substituted or unsubstituted C₁-C₆₀ heteroarylgroup, a substituted or unsubstituted monovalent non-aromatic condensedpolycyclic group, and a substituted or unsubstituted monovalentnon-aromatic hetero-condensed polycyclic group; n1 is selected from 0and 1; R₂₁ is selected from a substituted or unsubstituted C₆-C₆₀ arylgroup, a substituted or unsubstituted C₁-C₆₀ heteroaryl group, asubstituted or unsubstituted monovalent non-aromatic condensedpolycyclic group, and a substituted or unsubstituted monovalentnon-aromatic hetero-condensed polycyclic group; R₁₇ to R₂₀, R₂₂, and R₂₃are each independently selected from a hydrogen, a deuterium, —F, —Cl,—Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group,an amidino group, a hydrazine group, a hydrazone group, a carboxylicacid group or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a substituted or unsubstitutedC₁-C₆₀ alkyl group, a substituted or unsubstituted C₁-C₆₀ alkoxy group,a substituted or unsubstituted C₃-C₁₀ cycloalkyl group, a substituted orunsubstituted C₆-C₆₀ aryl group, a substituted or unsubstituted C₆-C₆₀aryloxy group, a substituted or unsubstituted C₁-C₆₀ heteroaryl group,and —Si(Q₁)(Q₂)(Q₃); b17, b18, and b20 are each independently selectedfrom 1 and 2; b19 and b21 are each independently selected from 1, 2, and3; b22 is selected from 1, 2, 3, 4, and 5; b23 is selected from 1, 2, 3,4, 5, 6, 7, and 8; at least one substituent of the substituted C₆-C₆₀arylene group, the substituted C₁-C₆₀ heteroarylene group, thesubstituted C₇-C₆₀ arylene group, the substituted C₁-C₆₀ alkyl group,the substituted C₁-C₆₀ alkoxy group, the substituted C₃-C₁₀ cycloalkylgroup, the substituted, C₆-C₆₀ aryl group, the substituted C₆-C₆₀aryloxy group, the substituted C₁-C₆₀ heteroaryl group, the substitutedmonovalent non-aromatic condensed polycyclic group, and the substitutedmonovalent non-aromatic hetero-condensed polycyclic group is selectedfrom: a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, anitro group, an amino group, an amidino group, a hydrazine group, ahydrazone group, a carboxylic acid group or a salt thereof, a sulfonicacid group or a salt thereof, a phosphoric acid group or a salt thereof,a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group,and a C₁-C₆₀ alkoxy group; a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group,a C₂-C₆₀ alkynyl group, and a C₁-C₆₀ alkoxy group, each substituted withat least one selected from a deuterium, —F, —Cl, —Br, —I, a hydroxylgroup, a cyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxylic acid group or a saltthereof, a sulfonic acid group or a salt thereof, a phosphoric acidgroup or a salt thereof, a C₃-C₁₀ cycloalkyl group, a C₂-C₁₀heterocycloalkyl group, a C₃-C₁₀ cycloalkenyl group, a C₂-C₁₀heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀ aryloxy group, aC₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, a monovalentnon-aromatic condensed polycyclic group, a monovalent non-aromatichetero-condensed polycyclic group, and —Si(Q₁₁)(Q₁₂)(Q₁₃); a C₃-C₁₀cycloalkyl group, a C₂-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenylgroup, a C₂-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, amonovalent non-aromatic condensed polycyclic group, and a monovalentnon-aromatic hetero-condensed polycyclic group; a C₃-C₁₀ cycloalkylgroup, a C₂-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenyl group, aC₂-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀ aryloxygroup, a C₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, a monovalentnon-aromatic condensed polycyclic group, and a monovalent non-aromatichetero-condensed polycyclic group, each substituted with at least oneselected from a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyanogroup, a nitro group, an amino group, an amidino group, a hydrazinegroup, a hydrazone group, a carboxylic acid group or a salt thereof, asulfonic acid group or a salt thereof, a phosphoric acid group or a saltthereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynylgroup, a C₁-C₆₀ alkoxy group, a C₃-C₁₀ cycloalkyl group, a C₂-C₁₀heterocycloalkyl group, a C₃-C₁₀ cycloalkenyl group, a C₂-C₁₀heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀ aryloxy group, aC₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, a monovalentnon-aromatic condensed polycyclic group, a monovalent non-aromatichetero-condensed polycyclic group, and —Si(Q₂₁)(Q₂₂)(Q₂₃); and—Si(Q₃₁)(Q₃₂)(Q₃₃); and Q₁ to Q₃, Q₁₁ to Q₁₃, Q₂₁ to Q₂₃, and Q₃₁ to Q₃₃are each independently selected from a C₁-C₆₀ alkyl group, a C₆-C₆₀ arylgroup, a C₁-C₆₀ heteroaryl group, a monovalent non-aromatic condensedpolycyclic group, and a monovalent non-aromatic hetero-condensedpolycyclic group.
 2. The organic light-emitting device of claim 1,wherein L₁ is represented by one of Formulae 3-1 to 3-22:

wherein in Formulae 3-1 to 3-22, Z₁ to Z₃ are each independentlyselected from a hydrogen, a deuterium, —F, —Cl, —Br, —I, a hydroxylgroup, a cyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxylic acid group or a saltthereof, a sulfonic acid group or a salt thereof, a phosphoric acidgroup or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxy group, aphenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, a triazinyl group, adibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolylgroup, and a dibenzocarbazolyl group; d1 is selected from 1, 2, 3, and4; d2 is selected from 1, 2, 3, 4, 5, and 6; d3 is selected from 1, 2,3, 4, and 5; d4 is selected from 1, 2, and 3; d5 is selected from 1 and2; and * and *′ each indicate a binding site to a neighboring atom. 3.The organic light-emitting device of claim 1, wherein L₁ is representedby one of Formule 4-1 to 4-22:

wherein, in Formulae 4-1 to 4-22, * and *′ each indicate a binding siteto a neighboring atom.
 4. The organic light-emitting device of claim 1,wherein L₂ is represented by one of Formulae 3-2 to 3-22:

wherein, in Formulae 3-2 to 3-22, Z₁ to Z₃ are each independentlyselected from a hydrogen, a deuterium, —F, —Cl, —Br, —I, a hydroxylgroup, a cyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxylic acid group or a saltthereof, a sulfonic acid group or a salt thereof, a phosphoric acidgroup or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxy group, aphenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, a triazinyl group, adibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolylgroup, and a dibenzocarbazolyl group; d1 is selected from 1, 2, 3, and4; d2 is selected from 1, 2, 3, 4, 5, and 6; d3 is selected from 1, 2,3, 4, and 5; d4 is selected from 1, 2, and 3; d5 is selected from 1 and2; and * and *′ each indicate a binding site to a neighboring atom. 5.The organic light-emitting device of claim 1, wherein L₂ is representedby one of Formulae 4-2 to 4-22:

wherein in Formulae 4-1 to 4-22, * and *′ each indicate a binding siteto a neighboring atom.
 6. The organic light-emitting device of claim 1,wherein a1 and a2 are each independently selected from 1 and
 2. 7. Theorganic light-emitting device of claim 1, wherein R₁₁ to R₁₆ are eachindependently selected from a methyl group, an ethyl group, an n-propylgroup, an iso-propyl group, an n-butyl group, a sec-butyl group, aniso-butyl group, a tert-butyl group, an n-pentyl group, an n-hexylgroup, an n-heptyl group, an n-octyl group, a cyclopentyl group, acyclohexyl group, an adamantyl group, a norbornyl group, a phenyl group,a pentalenyl group, an indenyl group, a naphthyl group, an azulenylgroup, a heptalenyl group, an indacenyl group, an acenaphthyl group, afluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenalenyl group, a phenanthrenylene group, ananthracenyl group, a fluoranthenyl group, a triphenylenyl group, apyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group,a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenylgroup, a rubicenyl group, a coronenyl group, an ovalenyl group, apyrrolyl group, a thiophenyl group, a furanyl group, an imidazolylgroup, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, anoxazolyl group, an isooxazolyl group, a pyridinyl group, a pyrazinylgroup, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, anindolyl group, an indazolyl group, a purinyl group, a quinolinyl group,an isoquinolinyl group, a carbazolyl group, a benzoquinolinyl group, aphthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, aquinazolinyl group, a cinnolinyl group, a phenanthridinyl group, anacridinyl group, a phenanthrolinyl group, a phenazinyl group, abenzimidazolyl group, a benzofuranyl group, a benzothiophenyl group, anisobenzothiazolyl group, a benzooxazolyl group, an isobenzooxazolylgroup, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, atriazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, adibenzosilolyl group, a benzocarbazolyl group, and a dibenzocarbazolylgroup; and a methyl group, an ethyl group, an n-propyl group, aniso-propyl group, an n-butyl group, a sec-butyl group, an iso-butylgroup, a tert-butyl group, an n-pentyl group, an n-hexyl group, ann-heptyl group, an n-octyl group, a cyclopentyl group, a cyclohexylgroup, an adamantyl group, a norbornyl group, a phenyl group, apentalenyl group, an indenyl group, a naphthyl group, an azulenyl group,a heptalenyl group, an indacenyl group, an acenaphthyl group, afluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, ananthracenyl group, a fluoranthenyl group, a triphenylenyl group, apyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group,a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenylgroup, a rubicenyl group, a coronenyl group, an ovalenyl group, apyrrolyl group, a thiophenyl group, a furanyl group, an imidazolylgroup, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, anoxazolyl group, an isooxazolyl group, a pyridinyl group, a pyrazinylgroup, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, anindolyl group, an indazolyl group, a furinyl group, a quinolinyl group,an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, anaphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, acinnolinyl group, a phenanthridinyl group, an acridinyl group, aphenanthrolinyl group, a phenazinyl group, a benzoimidazolyl group, abenzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group,a benzooxazolyl group, an isobenzooxazolyl group, a triazolyl group, atetrazolyl group, an oxadiazolyl group, a triazinyl group, adibenzofuranyl group, a dibenzophenyl group, a dibenzosilolyl group, abenzocarbazolyl group, and a dibenzocarbazolyl group, each substitutedwith at least one selected from a deuterium, —F, —Cl, —Br, —I, ahydroxyl group, a cyano group, a nitro group, an amino group, an amidinogroup, a hydrazine group, a hydrazone group, a carboxylic acid group ora salt thereof, a sulfonic acid group or a salt thereof, a phosphoricacid group or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxygroup, —Si(Q₃₁)(Q₃₂)(Q₃₃), a —F substituted C₁-C₂₀ alkyl group, a phenylgroup, a pentalenyl group, an indenyl group, a naphthyl group, anazulenyl group, a heptalenyl group, an indacenyl group, an acenaphthylgroup, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenylgroup, a dibenzofluorenyl group, a phenalenyl group, a phenanthrenylgroup, an anthracenyl group, a fluoranthenyl group, a triphenylenylgroup, a pyrenyl group, a chrysenyl group, a naphthacenyl group, apicenyl group, a perylenyl group, a pentaphenyl group, a hexacenylgroup, a pentacenyl group, a rubicenyl group, a coronenyl group, anovalenyl group, a pyrrolyl group, a thiophenyl group, a furanyl group,an imidazolyl group, a pyrazolyl group, a thiazolyl group, anisothiazolyl group, an oxazolyl group, an isooxazolyl group, a pyridinylgroup, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, anisoindolyl group, an indolyl group, an indazolyl group, a furinyl group,a quinolinyl group, an isoquinolinyl group, a carbazolyl group, abenzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, aquinoxalinyl group, a quinazolinyl group, a cinnolinyl group, acarbazolyl group, a phenanthridinyl group, an acridinyl group, aphenanthrolinyl group, a phenazinyl group, a benzoimidazolyl group, abenzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group,a benzooxazolyl group, an isobenzooxazolyl group, a triazolyl group, atetrazolyl group, an oxadiazolyl group, a triazinyl group, adibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolylgroup, and a dibenzocarbazolyl group; and Q₃₁ to Q₃₃ are eachindependently selected from a C₁-C₂₀ alkyl group, a phenyl group, anaphthyl group, and a pyridinyl group.
 8. The organic light-emittingdevice of claim 1, wherein R₁₁ to R₁₆ are each independently selectedfrom a methyl group, an iso-propyl group, a cyclohexyl group, a phenylgroup, a naphthyl group, a phenanthrenyl group, a fluorenyl group, acarbazolyl group, a dibenzofuranyl group, and a dibenzophenyl group; anda methyl group, an iso-propyl group, a cyclohexyl group, a phenyl group,a naphthyl group, a phenanthrenyl group, a fluorenyl group, a carbazolylgroup, a dibenzofuranyl group, and a dibenzophenyl group, eachsubstituted with at least one selected from a deuterium, —F, —Cl, —Br,—I, a cyano group, a methyl group, an iso-propyl group, —Si(CH₃)₃, —CF₃,a phenyl group, and a naphthyl group.
 9. The organic light-emittingdevice of claim 1, wherein R₁₁ to R₁₆ are each independently selectedfrom a methyl group, an iso-propyl group, a cyclohexyl group, and agroup represented by one of Formulae 5-1 to 5-21:

wherein, in Formulae 5-1 to 5-21, * indicates a binding site to aneighboring atom.
 10. The organic light-emitting device of claim 1,wherein R₂₁ is selected from a phenyl group, a pentalenyl group, anindenyl group, a naphthyl group, an azulenyl group, a heptalenyl group,an indacenyl group, an acenaphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenalenyl group, a phenanthrenyl group, an anthracenyl group, afluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenylgroup, a naphthacenyl group, a picenyl group, a perylenyl group, apentaphenyl group, a hexacenyl group, a pentacenyl group, a rubicenylgroup, a coronenyl group, an ovalenyl group, a pyrrolyl group, athiophenyl group, a furanyl group, an imidazolyl group, a pyrazolylgroup, a thiazolyl group, an isothiazolyl group, an oxazolyl group, anisooxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, an isoindolyl group, an indolyl group, anindazolyl group, a furinyl group, a quinolinyl group, an isoquinolinylgroup, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinylgroup, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, aphenanthridinyl group, an acridinyl group, a phenanthrolinyl group, aphenazinyl group, a benzoimidazolyl group, a benzofuranyl group, abenzothiophenyl group, an isobenzothiazolyl group, a benzooxazolylgroup, an isobenzooxazolyl group, a triazolyl group, a tetrazolyl group,an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, adibenzophenyl group, a dibenzosilolyl group, a benzocarbazolyl group,and a dibenzocarbazolyl group; and a phenyl group, a pentalenyl group,an indenyl group, a naphthyl group, an azulenyl group, a heptalenylgroup, an indacenyl group, an acenaphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenalenyl group, a phenanthrenyl group, an anthracenyl group, afluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenylgroup, a naphthacenyl group, a picenyl group, a perylenyl group, apentaphenyl group, a hexacenyl group, a pentacenyl group, a rubicenylgroup, a coronenyl group, an ovalenyl group, a pyrrolyl group, athiophenyl group, a furanyl group, an imidazolyl group, a pyrazolylgroup, a thiazolyl group, an isothiazolyl group, an oxazolyl group, anisooxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, an isoindolyl group, an indolyl group, anindazolyl group, a furinyl group, a quinolinyl group, an isoquinolinylgroup, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinylgroup, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, aphenanthridinyl group, an acridinyl group, a phenanthrolinyl group, aphenazinyl group, a benzoimidazolyl group, a benzofuranyl group, abenzothiophenyl group, an isobenzothiazolyl group, a benzooxazolylgroup, an isobenzooxazolyl group, a triazolyl group, a tetrazolyl group,an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, adibenzophenyl group, a dibenzosilolyl group, a benzocarbazolyl group,and a dibenzocarbazolyl group, each substituted with at least oneselected from a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyanogroup, a nitro group, an amino group, an amidino group, a hydrazinegroup, a hydrazone group, a carboxylic acid group or a salt thereof, asulfonic acid group or a salt thereof, a phosphoric acid group or a saltthereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxy group,—Si(Q₃₁)(Q₃₂)(Q₃₃), a —F substituted C₁-C₂₀ alkyl group, a phenyl group,a pentalenyl group, an indenyl group, a naphthyl group, an azulenylgroup, a heptalenyl group, an indacenyl group, an acenaphthyl group, afluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, ananthracenyl group, a fluoranthenyl group, a triphenylenyl group, apyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group,a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenylgroup, a rubicenyl group, a coronenyl group, an ovalenyl group, apyrrolyl group, a thiophenyl group, a furanyl group, an imidazolylgroup, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, anoxazolyl group, an isooxazolyl group, a pyridinyl group, a pyrazinylgroup, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, anindolyl group, an indazolyl group, a furinyl group, a quinolinyl group,an isoquinolinyl group, a carbazolyl group, a benzoquinolinyl group, aphthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, aquinazolinyl group, a cinnolinyl group, a carbazolyl group, aphenanthridinyl group, an acridinyl group, a phenanthrolinyl group, aphenazinyl group, a benzoimidazolyl group, a benzofuranyl group, abenzothiophenyl group, an isobenzothiazolyl group, a benzooxazolylgroup, an isobenzooxazolyl group, a triazolyl group, a tetrazolyl group,an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, adibenzothiophenyl group, a benzocarbazolyl group, and adibenzocarbazolyl group; and Q₃₁ to Q₃₃ are each independently selectedfrom a C₁-C₂₀ alkyl group, a phenyl group, a naphthyl group, and apyridinyl group.
 11. The organic light-emitting device of claim 1,wherein R₂₁ is selected from a phenyl group, a naphthyl group, aphenanthrenyl group, a fluorenyl group, a carbazolyl group, adibenzofuranyl group, and a dibenzophenyl group; and a methyl group, aniso-propyl group, a cyclohexyl group, a phenyl group, a naphthyl group,a phenanthrenyl group, a fluorenyl group, a carbazolyl group, adibenzofuranyl group, and a dibenzophenyl group, each substituted withat least one selected from a deuterium, —F, —Cl, —Br, —I, a cyano group,a methyl group, an iso-propyl group, —Si(CH₃)₃, —CF₃, a phenyl group,and a naphthyl group.
 12. The organic light-emitting device of claim 1,wherein R₂₁ is represented by one of Formulae 5-1 to 5-21:

wherein, in Formulae 5-1 to 5-21, * indicates a binding site to aneighboring atom.
 13. The organic light-emitting device of claim 1,wherein R₁₇ to R₂₀, R₂₂, and R₂₃ are each independently selected from ahydrogen, a deuterium, —F, —Cl, —Br, —I, a cyano group, a methyl group,an ethyl group, an n-propyl group, an iso-propyl group, a cyclopentylgroup, a cyclohexyl group, a phenyl group, a naphthyl group, and—Si(CH₃)₃.
 14. The organic light-emitting device of claim 1, wherein R₁₇to R₂₀ are each independently selected from a hydrogen, a cyano group, amethyl group, an iso-propyl group, a cyclohexyl group, a phenyl group,and —Si(CH₃)₃.
 15. The organic light-emitting device of claim 1, whereinthe pyrene-based compound is represented by one of Formulae 1A to 1D:


16. The organic light-emitting device of claim 1, wherein thepyrene-based compound is represented by one of Formulae 1E to 1H:


17. The organic light-emitting device of claim 1, wherein theanthracene-based compound is represented by Formula 2A:


18. The organic light-emitting device of claim 1, wherein thepyrene-based compound is selected from the Compounds below:


19. The organic light-emitting device of claim 1, wherein theanthracene-based compound is selected from the Compounds below:


20. The organic light-emitting device of claim 1, wherein the emissionlayer comprises at least one pyrene-based compound represented byFormula 1 above and at least one anthracene-based compound representedby Formula 2 above.